Page 420

Seismic echoes reveal a mysterious ‘donut’ inside Earth’s core

Source: The Conversation (Au and NZ) – By Hrvoje Tkalčić, Professor, Head of Geophysics, Director of Warramunga Array, Australian National University

Rost9 / Shutterstock

About 2,890 kilometres beneath our feet lies a gigantic ball of liquid metal: our planet’s core. Scientists like me use the seismic waves created by earthquakes as a kind of ultrasound to “see” the shape and structure of the core.

Using a new way of studying these waves, my colleague Xiaolong Ma and I have made a surprising discovery: there is a large donut-shaped region of the core around the Equator, a few hundred kilometres thick, where seismic waves travel about 2% slower than in the rest of the core.

We think this region contains more lighter elements such as silicon and oxygen, and may play a crucial role in the vast currents of liquid metal running through the core that generate Earth’s magnetic field. Our results are published today in Science Advances.

The ‘coda-correlation wavefield’

Most studies of the seismic waves created by earthquakes look at the big, initial wavefronts that travel around the world in the hour or so after the quake.

We realised we could learn something new by looking at the later, fainter part of these waves, known as the coda – the section that brings a piece of music to its end. In particular, we looked at how similar the coda recorded at different seismic detectors were, several hours after they began.

In mathematical terms, this similarity is measured by something called correlation. Together, we call these similarities in the late parts of earthquake waves the “coda-correlation wavefield”.

By looking at the coda-correlation wavefield, we detected tiny signals stemming from multiple reverberating waves we wouldn’t otherwise see. By understanding the paths these reverberating waves had taken and matching them with signals in the coda-correlation wavefield, we worked out how long they had taken to travel through the planet.

We then compared what we saw in seismic detectors closer to the poles with results from nearer the Equator. Overall, the waves detected closer to the poles were travelling faster than those near the Equator.

Earth’s core, showing in red the ‘donut’ containing more light elements around the equator.
Xiaolong Ma and Hrvoje Tkalčić

We tried out many computer models and simulations of what conditions in the core could create these results. In the end, we found there must be a torus – a donut-shaped region – in the outer core around the Equator, where waves travel more slowly.

Seismologists have not detected this region before. However, using the coda-correlation wavefield lets us “see” the outer core in more detail, and more evenly.

Previous studies concluded that waves moved more slowly everywhere around the “ceiling” of the outer core. However, we have shown in this study that the low-velocity region is only near the Equator.

The outer core and the geodynamo

Earth’s outer core has a radius of around 3,480km, which makes it slightly bigger than the planet Mars. It consists mainly of iron and nickel, with some traces of lighter elements such as silicon, oxygen, sulfur, hydrogen and carbon.

The bottom of the outer core is hotter than the top, and the temperature difference makes the liquid metal move like water in a pot boiling on the stove. This process is called thermal convection, and we think the constant movement should mean all the material in the outer core is quite well mixed and uniform.

But if everywhere in the outer core is full of the same material, seismic waves should travel at about the same speed everywhere, too. So why do these waves slow down in the donut-shaped region we found?

We think there must be a higher concentration of light elements in this region. These may be released from Earth’s solid inner core into the outer core, where their buoyancy creates more convection.

Why do the lighter elements build up more in the equatorial donut region? Scientists think this could be explained if more heat is transferred from the outer core to the rocky mantle above it in this region.

A cross-section of Earth’s core, showing the ‘donut’ containing more light elements around the equator.
Ma and Tkalčić / Science Advances

There is also another planetary-scale process at work in the outer core. Earth’s rotation and the small solid inner core make the liquid of the outer core organise itself in long vertical vortices running in a north–south direction, like giant waterspouts.

The turbulent movement of liquid metal in these vortices creates the “geodynamo” responsible for creating and maintaining Earth’s magnetic field. This magnetic field shields the planet from harmful solar wind and radiation, making life possible on the surface.

A more detailed view of the makeup of the outer core – including the new-found donut of lighter elements – will help us better understand Earth’s magnetic field. In particular, how the field changes its intensity and direction in time is crucial for life on Earth and the potential habitability of planets and exoplanets.

Hrvoje Tkalčić receives funding from the Australian Research Council.

ref. Seismic echoes reveal a mysterious ‘donut’ inside Earth’s core – https://theconversation.com/seismic-echoes-reveal-a-mysterious-donut-inside-earths-core-237489

Politics with Michelle Grattan: Reserve Bank’s Andrew Hauser says don’t read too much for Australia from US rates message

Source: The Conversation (Au and NZ) – By Michelle Grattan, Professorial Fellow, University of Canberra

Inflation remains top of mind as the Reserve Bank of Australia continues to keep interest rates on hold at a time when the United States Federal Reserve signals that it will start cutting rates.

One of the new lead architects behind the RBA’s thinking is Deputy Governor of the bank Andrew Hauser. Hauser formerly worked at the Bank of England and was chosen by Jim Chalmers, the first-ever senior appointment from overseas.

Hauser is just back from a meeting of central bankers in the United States at which the Chair of the US Federal Reserve, Jerome Powell, indicated it was time for US rates to fall. Will that produce a rethink in Australia where the Reserve Bank has flagged rates are likely to stay on hold until next year?  

Obviously, a significant part of the inflation story over the past two or three years has been a global story. It’s been related to global supply chains. It’s related, obviously, to the fallout from COVID and the impact of all of that on global demand.

But no. The decision on interest rates for the U.S. is for the U.S. to make. The decision on Australian rates is for the RBA and for the Australians to make, and we’re obviously […] hopeful that in due course we would follow suit. But we have to take account of the outlook for inflation in Australia. And inflation unfortunately is still a little bit too high at the moment.

Sadly, at the moment Australian inflation is a bit stickier than it has been in the US. And there’s a variety of reasons for that.

We’re not yet as confident, as Jay is in the US, that inflation in Australia is back on a sustainable path, back to target. And therefore we have to hold, rates where they are for the time being.  

On the delicate balance of reducing inflation and maintaining employment:

We have made a very conscious decision to set policy to bring inflation down, but to bring it down slowly enough that we protect the employment gains.

And the employment gains in Australia have been quite stunning, actually. Even now, the numbers that are coming through in the monthly releases, where people have been predicting an imminent downturn in the labour market, it could still happen, but even now, […] we are creating jobs at a pretty spectacular rate.

On his controversial speech questioning the certainty with which people proclaim about economic issues, which caused a stir among some commentators, Hauser says:

Look, frankly speaking, I think Australians would have every right to be bloody annoyed at a foreigner lecturing them to shut up and agree with the central bank, which would go down like a bowl of sick if an Australian tried to do that in the U.K. as well. But that wasn’t what I was trying to do it at all. In fact, it was the exact opposite. I was trying to make the case for humility but not for a lack of diversity of views.

I’ve loved my short time in Australia so far, and I’m here to listen, learn and serve. And it’s been quite nice actually – [I] had quite a long list of people sending their private support for the messages I was trying to give in the days after the speech.

The Conversation

Michelle Grattan does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Politics with Michelle Grattan: Reserve Bank’s Andrew Hauser says don’t read too much for Australia from US rates message – https://theconversation.com/politics-with-michelle-grattan-reserve-banks-andrew-hauser-says-dont-read-too-much-for-australia-from-us-rates-message-237470

Technology has helped para athletes compete for decades. But it can also create an unfair advantage

Source: The Conversation (Au and NZ) – By John Cairney, Professor and Head of Human Movement and Nutrition Sciences; Director, The Queensland Centre for Olympic and Paralympic Studies, The University of Queensland

The Paralympic Games, now a major global event, has a history rooted in rehabilitation.

The first official Paralympic Games was held in Rome in 1960. But its origins trace back to 1948, when neurologist Ludwig Guttmann organised the Stoke Mandeville Games in England for World War II veterans with spinal cord injuries. He believed sport could play a powerful role in rehabilitation, pushing the boundaries of human performance in ways other approaches could not.

Today’s Paralympic Games continue this legacy, with technology playing a central role in these achievements.

Technology has enabled athletes with disabilities to reach incredible heights. However, it has also introduced new challenges, particularly in ensuring fairness and equity in competition.

From simple to sophisticated

In the early days, Paralympic technology was basic by today’s standards. Athletes competed in regular wheelchairs and used simple strapping to assist.

As the Paralympic Games grew, competitive success became increasingly prized. As a result, athletes used specialised technology to gain a competitive edge.

Running blades, for example, are carbon fibre prosthetics designed to mimic natural leg movement while enhancing speed and bounciness. These blades have revolutionised track events. They enable athletes with lower-limb amputations to compete at speeds comparable to, and sometimes even faster than, able-bodied athletes.

South African sprinter and convicted murderer Oscar Pistorius was the first double amputee with running blades who competed in the London Olympics in 2012 as part of the men’s 4×400 relay.

A shifting conversation

By the end of the 2010s, however, the conversation about assistive technology used by athletes had shifted from celebrating integration to debating unfair advantage.

In 2019, Blake Leeper, a bilateral amputee sprinter, applied to World Athletics to compete in the 2020 Tokyo Olympics against able-bodied athletes. The international governing body for athletics received independent scientific advice that Leeper’s prosthetics gave him a competitive advantage and rejected the application.

Leeper contested this decision in the Court of Arbitration for Sport. But the court ruled against him.

Leeper, who is African-American, appealed the decision on the grounds the scientific advice provided to World Athletics was based on racially prejudiced science. But the court rejected his appeal. It ruled the evidence to be fair and unbiased.

As technology continues to advance, running blades may soon seem modest compared to what the future brings.

Neuroprosthetics are a notable example. These are devices that interface with the human nervous system to overcome losses in muscular strength and endurance that result from neurological impairments such as spinal cord injury.

The devices can be attached externally or surgically implanted. They can improve functions such as sitting stability and rowing machine performance.

It’s not hard to imagine some athletes using these devices to gain a significant – but possibly undetectable – advantage over competitors.

The International Paralympic Committee has a sport equipment policy. One of the principles is that sports performance should be determined primarily by human performance, and the effect of technology and equipment should be secondary.

However, upholding this principle requires enforceable rules. As technology advances, this will become increasingly challenging – just as it is in the Olympics.

Levelling the playing field

Technology can also play a crucial role when it comes to classifying athletes.

Each of the 22 Paralympic sports uses a classification system to ensure competition is fair and meaningful. Each athlete is classified according to the type and severity of their impairment.

However, classification is not without its challenges.

Despite significant research advances, the best and most valid processes available still rely on expert judgement. And even when classifiers follow strict guidelines, there is an incredibly wide array of test results for classifiers to consider.

Many classification tests also require athletes to give a full effort. This leaves open the possibility an athlete wishing to gain an unfair competitive advantage might deliberately underperform on these tests to exaggerate their impairment severity. They might then be placed in a class of athletes with more severe impairments.

To address these challenges, we are part of a research team that is currently developing an artificial intelligence-driven classification system.

We will use computer vision of para athletes performing a wide array of movements over time to train the system and develop an app. The app will allow athletes anywhere in the world to video themselves performing sports-related tasks, submit the video and receive an accurate, objective sports class.

This will make classifications more trustworthy and will improve access for athletes in rural and remote areas or developing countries.

However, the diversity of para athletes is enormous and the process of recruiting and filming a representative sample of high-level para athletes will not be easy. The system also can’t fully protect against athletes deliberately under-performing. But it is able to detect variations in performance that occur over time which would not otherwise be detectable to the human eye.

This will give greater confidence in the accuracy of the athlete’s classification.

Once the system is developed, its success will also depend on gaining the trust of the whole Paralympic community.

Using technology to gain an unfair advantage is as old as sport itself. But technology is also the very tool we must use to ensure fairness and to level the playing field.

John Cairney is currently working with an industry partner on developing an AI-driven method for athlete classification.

Emma Beckman is on secondment with the Queensland Academy of Sport and Paralympics Australia. She is currently working with an industry partner on developing an AI-driven method for athlete classification.

Sean Tweedy is currently working with an industry partner on developing an AI-driven method for athlete classification. He is also a member of the International Paralympic Committee’s Classification Compliance and Oversight Committee and a member of World Para Athletics Classification Advisory Group.

ref. Technology has helped para athletes compete for decades. But it can also create an unfair advantage – https://theconversation.com/technology-has-helped-para-athletes-compete-for-decades-but-it-can-also-create-an-unfair-advantage-237754

What is eastern equine encephalitis? Two mosquito researchers explain what’s behind the latest outbreaks

Source: The Conversation (Au and NZ) – By Cameron Webb, Clinical Associate Professor and Principal Hospital Scientist, University of Sydney

Blue jays are an important host of eastern equine encephalitis virus in the United States. Mathew Schwartz/Unsplash

Health authorities in the United States are issuing warnings and closing public parks due to a rare but potentially deadly mosquito-borne disease.

This week, a resident of the US state of New Hampshire died after being hospitalised with eastern equine encephalitis. Cases have also been detected in other states.

But what is eastern equine encephalitis? How is it spread? What, as the name suggests, do horses have to do with it? And is it a problem for Australia?

What is eastern equine encephalitis?

Eastern equine encephalitis is caused by a virus typically only found in some eastern parts of the Americas, from Central America to Canada.

Eastern equine encephalitis virus causes neurological disease, particularly encephalitis (inflammation and swelling of the brain) and is transmitted to humans via a mosquito bite. Symptoms can be severe and potentially fatal.

But most people bitten by a mosquito carrying the virus won’t have symptoms. For those who develop disease, symptoms include headache, neck stiffness, confusion, seizures and coma.

About one-third of patients with severe symptoms will die and many of those who survive have ongoing neurological problems.

It’s not just people at risk from the virus. Horses are susceptible too and, like humans, can also develop fatal encephalitis after a bite from an infected mosquito.

The virus was discovered after an outbreak of fatal disease in horses in the New England region of the US in 1831, hence the reference to equine illness in its name.

Wild, farmed and captive birds can also be infected with the virus and, in some species develop disease. In fact, birds are key to how the virus spreads.

How is eastern equine encephalitis virus spread?

Birds – especially passerines, a group that includes robins, starlings, thrushes and blue jays – are the main hosts of the virus.

These birds produce high enough levels of the virus to infect biting mosquitoes and maintain what’s known as a “transmission cycle”.

Bird-feeding mosquitoes in forested wetlands, especially Culiseta melanura, allow the virus to circulate among birds. But this mosquito rarely bites people so it isn’t as important for outbreaks of human disease.

It’s the mosquitoes that feed on both birds and mammals that transmit the virus to humans and horses. These include Aedes, Coquillettidia and Culex mosquitoes. But once infected, humans and horses do not spread the virus. That’s because they don’t produce high enough levels of the virus to infect mosquitoes.

How can we limit the spread?

There are no specific treatments for infection with eastern equine encephalitis virus, or any licensed vaccines for use in people. There is a vaccine registered for veterinary use to prevent virus infection in horses.

Personal protective measures and mosquito control are the main strategies to limit people being exposed to the virus.

Outbreaks can have a significant impact on communities, not only from the disease itself, but from measures implemented to limit transmission.

Recent outbreaks have led to outdoor events being cancelled. There have also been concerns about the widespread use of aerial “fogging” to kill mosquitoes as commonly used chemicals are not specific to mosquitoes and may pose a risk to other insects.

Some towns have closed parklands during the evening and asked residents not to go outside at night.

Why is there an outbreak now?

The virus circulates year-round in tropical areas such as Florida. In the north-east of the US, the virus has more sporadic activity. Here, it’s typically introduced by migratory birds and is active in the warmer months when mosquito populations are thriving.

The virus has been known for many decades and a number of outbreaks have been reported in North America. One of the last substantial outbreaks was in 2019 across several north-eastern US states, when there were 38 human cases (including 12 deaths).

There is evidence the virus is spreading into new regions of North America. But, given the sporadic nature of outbreaks, it is difficult to predict when they will occur.

A number of factors are likely at play in determining future outbreaks and the spread of the virus to new regions, including the climate, environmental factors, the activity of mosquitoes and wildlife, and also, importantly, people.

With increasing contact between people and the mosquitoes that can pass on the virus from infected birds, the public health risks increase.

Perhaps human activity around the habitats of mosquitoes and birds, including encroachment of urban development into forested wetlands, elevates risk.

So it’s crucial for health authorities to monitor mosquito and virus activity to provide early warning of the risk of human disease.

New Hampshire pond and wetland system
Mosquitoes found in forested wetlands allow the virus to spread among birds.
Jeff Holcombe/Shutterstock

Is there a risk to Australia?

There is no evidence that eastern equine encephalitis virus is in Australia and there is no immediate risk of its introduction here.

While Culiseta mosquitoes are found in Australia, their role in local virus outbreaks in people or animals is not well understood.

But there are dozens of different mosquitoes involved in the spread of alphaviruses in Australia. That’s the group that includes eastern equine encephalitis virus, as well as ones that exist in Australia, namely Ross River and Barmah Forest viruses.

It’s reasonable to assume some of these mosquitoes may be able to transmit the virus but this hasn’t been tested in laboratory experiments.

There is very little information on how local passerine birds may play a role in establishing cycles of viral transmission in Australia. There is also no information on whether native Australian vertebrates, such as marsupials, would respond to infection.

When we consider all the available evidence, the risk of the virus spreading to Australia and subsequently causing an outbreak is, most likely, very low.

Are travellers at risk?

The risk of being bitten by a mosquito carrying eastern equine encephalitis virus is extremely low. But anyone visiting eastern regions of North America, including the US and Canada, where the virus can occur should take precautions to avoid being bitten by mosquitoes.

Follow directions from local health authorities. And take steps to avoid the locations (especially forested wetlands) and times when mosquitoes are active (typically dawn and dusk). Wear loose fitting clothing with long sleeves and apply repellents containing diethyltoluamide (commonly known as DEET), picaridin or oil of lemon eucalyptus.

These precautions will also protect against infection with other mosquito-borne viruses you might encounter there, such as West Nile virus.

The Conversation

Cameron Webb and the Department of Medical Entomology, NSW Health Pathology, have been engaged by a wide range of insect repellent and insecticide manufacturers to provide testing of products and provide expert advice on mosquito biology. Cameron has also received funding from local, state and federal agencies to undertake research into mosquito-borne disease surveillance and management.

Andrew van den Hurk has received funding from local, state and federal agencies to study the ecology of mosquito-borne pathogens, and their surveillance and control. He is an employee of the Department of Health, Queensland government.

ref. What is eastern equine encephalitis? Two mosquito researchers explain what’s behind the latest outbreaks – https://theconversation.com/what-is-eastern-equine-encephalitis-two-mosquito-researchers-explain-whats-behind-the-latest-outbreaks-237572

The Paralympics can be an economic boon for host cities – and leave a unique legacy

Source: The Conversation (Au and NZ) – By Kirsten Holmes, Professor, School of Management and Marketing, Curtin University

The mega-event glow continues in Paris, with the 2024 Summer Paralympic Games now well underway. Some 4,400 athletes will take to the world stage to compete across 22 different sports.

The Paris Paralympic Games have attracted a phenomenal level of interest – over two million tickets have now been sold. Some are now speculating the event could make Paralympic history and become the first-ever sellout.

This raises some important questions for host cities. How do the economics of the Paralympics compare to the Olympics? Who gets the broadcast rights?

Above all, what is the legacy of this event on its own – separate from the Olympics – likely to be for Paris? The games will provide an anticipated economic boon, but their real value lies in the ever-brighter spotlight they shine on elite para sports.




Read more:
Brand Olympics: do the famous rings deliver value to host countries?


The games are deeply intertwined

The cost of hosting the Olympics can famously blow out to way above initial estimates. Since the early 2000s, host cities have been awarded the rights to stage the Paralympics as well, which means the economics of both – and risk of cost overruns – are closely intertwined.

A recent University of Oxford report suggested the combined cost of the Paris 2024 games – A$12.8 billion – represented a cost overrun of about 115%.

Long-running concerns about cost blowouts spurred the International Olympic Committee (IOC) to create the “New Norm” model, approved in 2018, which featured 118 reforms aimed at reducing the financial burden of hosting the games.

The Paris games have actively adopted several elements of this model. Some of these initiatives – which remain in place for the Paralympics – include using existing infrastructure and attractions where possible and the extensive use of temporary venues.

The Paris Paralympic village has been designed to be 100% accessible, reusing much of the infrastructure from the Olympics.

As the Paralympic games feature sports distinct from the Olympics, a range of venues have been repurposed, such as the volleyball venue at the Eiffel Tower, which will host the blind football.




Read more:
Why aren’t the Olympics and Paralympics combined into one Games? The reasoning goes beyond logistics


Making Paris more accessible for everyone

Paris has taken a range of steps to make the city more accessible, expecting about 350,000 visitors with disabilities to attend the games.

This has included repairing damaged roads, improving road crossings by lowering sidewalks and installing new warning strips and traffic light sounds.

The city also spent €22 million (A$35.8 million) on making 59 of its 61 bus lines fully accessible.

A wheelchair user enters public transport with an accessible ramp.
The city invested in making 59 of its 61 bus lines fully accessible in time for the games.
Roman Zaiets/Shutterstock

The cost of making these infrastructure improvements can be heightened by the need to implement them quickly.

But for Paris, they will undoubtedly provide long-term benefits to city users and future visitors as a structural legacy of the 2024 Paralympics.

A tourism boost?

Hosting the Olympic and Paralympic games can quickly thrust a city into the international spotlight. The resulting tourism boom is sold as one of the biggest benefits of hosting the games.

Just how much Paris will benefit from this exposure has been an obvious point of debate, given France is already the world’s most visited country by international tourists.

Working out how the Paralympics’ specific effect on tourism might compare to the Olympics is difficult. But we can look to previous games.

A survey of visitor groups to the 2014 Winter Olympic Games in Sochi found a notable difference in average daily tourist spend between visitors to the Olympics (A$381) and visitors to the Paralympics (A$281). This was due to higher ticket and transport costs for Olympic visitors.

But tourists visiting the Paralympics stayed in the destination longer, which meant that total spending was similar for both groups.

Both groups were motivated a little differently as well. Olympic tourists were more focused on the competition, whereas Paralympic tourists were more inclined to seek out the festival atmosphere the games bought to the destination.

What about the broadcast rights?

For the first time in history, the Paris games will offer live coverage of all 22 Paralympic sports through a record number of global media partners. But they aren’t automatically included in the rights to broadcast the Olympics.

In Australia, Channel Nine paid the IOC A$305 million for the exclusive rights to Olympic Games coverage from 2024 through to 2032. Separately, it also negotiated with Paralympics Australia to secure the media rights for the 2024 Paralympic Games.

The dollar figure for this second deal is not publicly available, but is likely lower than the cost of the Olympics coverage, with fewer Paralympic sports to showcase.

Both deals have already proved lucrative for the network. In early August, Nine had secured more than A$140 million in advertising revenue for its Olympic and Paralympic coverage.

Where the real value lies

Beyond economic considerations, many would argue the real value of hosting the Paralympics is in the opportunity to shine a spotlight on elite para sports.

Some past media representation of the Paralympics has been problematic, with a focus on athletes’ disabilities as opposed to their performance.

With the record levels of media coverage for Paris 2024, the International Paralympic Committee has launched a major social media campaign to emphasise that para athletes are not “participating” but “competing” in the games.

We now hope that cities like Brisbane – set to host the games in 2032 – can learn from Paris in improving accessibility city-wide, and avoid some of the historical cost overruns of previous Olympic and Paralympic games.

The Conversation

Kirsten Holmes has previously received funding from the International Olympic Committee.

Leonie Lockstone-Binney has previously received funding from the International Olympic Committee.

ref. The Paralympics can be an economic boon for host cities – and leave a unique legacy – https://theconversation.com/the-paralympics-can-be-an-economic-boon-for-host-cities-and-leave-a-unique-legacy-237691

US conservative Candace Owens is set to tour Australia. Can the government stop her?

Source: The Conversation (Au and NZ) – By Danielle Ireland-Piper, Associate Professor, ANU National Security College, Australian National University

Shutterstock

American conservative author and influencer Candace Owens has amassed millions of followers on YouTube and X for her controversial views. These include suggesting the Holocaust was “ethnic cleansing that almost took place”. She also recently said men are being “socially engineered to be gay” and rejected that people can be transgender.

Owens is due to deliver talks in five cities across Australia in November 2024. But Australian Jewish groups and others are calling on Immigration Minister Tony Burke to deny her an entry visa. In the United States, the Anti-Defamation League has also previously outlined its concerns about her antisemitic messaging.

In response, Owens’ promoters have said she’s “never incited violence or been cancelled by social media for breaching community standard, and everything she has said has been in her capacity as a commentator and as an author”.

While it’s unclear if Owens has applied for a visa yet, what can the federal government do in cases like these?

It’s up to the minister

Australia’s federal government has discretion over which non-citizens can enter the country. Other than the specific rights of those seeking protection under international law, the capacity of a non-citizen to enter Australia is a privilege, not a right.

This is not a new issue. Australia has previously banned conspiracy theorists and far-right figures from entering the country. It’s also not exclusive to Australia, with other countries facing similar decisions.

In addition to decisions the department can make about granting visas, the immigration minister has the overarching discretion to decline or approve visas on character grounds.

Decisions of departments to grant or decline a visa can be reviewed by tribunal and courts. However, exercises of ministerial discretion to decline, cancel or grant visas are not reviewable. In short, Owens cannot seek judicial review of a decision of the minister to decline her a visa, should that happen.

On what grounds?

There are several grounds on which a minister can decline a visa. These include someone’s criminal record, concerns in relation to domestic violence, or concerns about terrorist activity. Overall, the minister is to consider the best interests of the Australian community.

In addition, and relevant to the case of Owens, another factor the minister can consider is the risk of vilification of a segment of the community, including conduct likely to be incompatible with the smooth operation of a multicultural society.

There are reports of a marked rise in antisemitic and Islamophobic incidents in Australia since October 2023.

In that context, it is reasonable to be concerned that someone with a history of antisemitism, for example, may contribute to a destabilisation of our social cohesion at a time when we need to be protecting it.

Threats to social cohesion are national security risks for many reasons, not least because this can lead to the normalisation of provocative and inflammatory behaviour. In turn, this has the potential to trigger an increase in acts of politically motivated violence, including terrorism.

In short, how we get along with each other in public matters in minimising the risk of extremists feeling emboldened to attack other members of our community violently. How we speak about each other in a public forum matters for minimising radicalisation. The Australia Security Intelligence Organisation (ASIO) has warned of this.

What about free speech?

As noted above, while Owens can appeal a decision on a visa made by the department, a court or tribunal cannot review an act of ministerial discretion.

However, ministers are not always immune to political pressure and decisions to cancel visas of high profile would-be visitors are not without public controversy.

Often this controversy centres on a difference of opinion on where the outer boundaries of the principles of free speech begin and end. Who gets to decide those boundaries?

A marketplace of free-flowing ideas is an important element of a representative democracy. There are also times when allowing for the airing of problematic ideas allows for them to be refuted in a way that is edifying for the community.

However, the right to free speech is not absolute, because it has to accommodate other rights. In an era of misinformation and disinformation and the rise of extremist ideas propagated online, the principles of free speech must be balanced alongside the imperative to keep our communities safe.

There is also a need to protect the right of all members of our community to be free from racial vilification, for example.

Importantly, there is no absolute right to free speech in the Australian Constitution. However, the Constitution does contain an “implied freedom of political communication”.

That freedom can be burdened for legitimate purposes as long as the measures taken are proportionate to the risk. Regulating hate speech is an example of a legitimate public purpose.

The means by which lawmakers can achieve that purpose that are not unlimited, but as long as regulation remains proportionate, limitations of political communication are permitted by the Australian Constitution.

The big picture

Ministerial discretion is an important tool in visa decision-making, but it is open to abuse.

Ultimately, though, there are checks and balances because ministers are accountable to the parliament (and to the National Anti-Corruption Commission). And parliament is accountable to the electorate.

But more broadly, words have power, particularly in the public domain. With great power comes great responsibility. That includes minimising hate.

The Conversation

Danielle Ireland-Piper has previously received research funding from the Deprtment of Defence. She is affiliated with the National Security College, which is a partnership between the Australian Government and the Australian National University.

ref. US conservative Candace Owens is set to tour Australia. Can the government stop her? – https://theconversation.com/us-conservative-candace-owens-is-set-to-tour-australia-can-the-government-stop-her-237768

Wondering how to get from Brisbane to Melbourne without wrecking the climate? Our transport choices make a huge difference

Source: The Conversation (Au and NZ) – By Robin Smit, Adjunct Professor, School of Civil and Environmental Engineering, University of Technology Sydney

Australian transport emissions are still growing. As a result, transport is expected to be our biggest-emitting sector by 2030. So, cutting transport emissions is crucial to Australia’s net-zero strategy.

Studies show electrifying passenger vehicles and trucks will greatly reduce greenhouse gas emissions. But the switch to electric vehicles is slow. It won’t be enough to reach net-zero by 2050.

Other strategies are needed. That’s where the concept of “mode shift” comes in. It involves shifting passengers and freight to lower-emission forms of transport such as electric rail and shipping.

In two new research papers, a colleague and I show what a big impact this could have on Australia’s emissions. We used the Inland Rail project linking Brisbane and Melbourne as a case study of the potential impacts of shifts between land-based transport, shipping and aviation. (The route comprises 12 sections, some already operational, some being built and others in the planning phase.) We modelled the total emissions of these modes for three years: 2019, 2030 and 2050.

We found electric rail is hands down the land transport mode with the lowest emissions intensity (the amount of greenhouse gas produced per kilometre travelled) for both passengers and freight. When we included air and sea transport, we found electric rail and shipping have the lowest emissions. Air transport in Australia is in a class of its own as its emissions performance is so much worse than other modes, particularly for freight.

It will be very hard to reach zero emissions in the transport sector in a timely fashion. To get there will require all hands on deck for the freight sector but also for personal travel and the choices we make.




Read more:
We compared land transport options for getting to net zero. Hands down, electric rail is the best


How much difference can mode shifts make?

Current domestic emissions by transport mode are skewed. The vast bulk (85%) of total annual carbon-dioxide-equivalent (CO₂-e) emissions comes from road transport. It’s followed by air (8%), rail (4%) and sea (2%) transport.

To fairly assess performance, we used the well-to-wheel/wake approach. It includes both direct and indirect emissions from producing, distributing and using fossil fuels, hydrogen and electricity. We calculated these emissions for 2019, 2030 and 2050.

These figures do not yet include non-domestic emissions created by Australian aviation and shipping activities overseas. Including these will greatly increase total emissions from these modes.

For passengers, air transport had the highest emission intensity. It is an energy-intensive mode of transport and has climate effects in addition to those caused by its CO₂ emissions, as I outline below. Including these effects, we estimated air transport’s emission intensity to be 1.7 to 2.8 times higher than for road transport.

From an emissions perspective, high-speed electric rail is a great alternative to road and air transport for travel between capital cities. It would result in deep emission cuts varying from 75–95%.

Graphic showing the emissions performance of the main passenger transport modes
Average well-to-wheel emission intensity for passenger transport. (Dashed line = mean, shading = 99.7% confidence interval, ‘Air’ = aircraft, ‘RF’ = radiative forcing, ‘Rail E’ = electric trains)
Author provided, Transport Energy/Emission Research (TER)

For freight in 2019, ships performed much better than any other mode. This included electric rail, due to the relatively high emission intensity of grid electricity at the time. As renewable sources replace fossil fuel generation, electric rail’s emission intensity will improve.

By 2050, bulk carriers and electric rail were estimated to have the lowest emission intensity of all modes. Shifting freight to these modes would deliver deep emission cuts varying from 50–99%.

Air transport performed particularly poorly for moving freight. Its emissions intensity was, on average, 96 to 265 times higher (including the non-CO₂ climate effects of aircraft) than that of electric rail, for instance.

Graphic showing the emission intensity of the various freight transport modes
Average well-to-wheel/wake emission intensity for freight transport. (Dashed line = mean, shading = 99.7% confidence interval, ‘Rail D’ = diesel trains, ‘Rail E’ = electric trains, ‘Sea B’ = bulk carriers, ‘Sea C’ = container ships. Please NOTE that aircraft are not included due to the impact of its high emissions on chart readability.
Author provided, Transport Energy/Emission Research (TER)

How did the study reach these conclusions?

Modelling the impacts of transport mode shifts on emissions is complex, country-specific and changes over time. It involves a broad range of inputs and information. Each mode has its own challenges and specific details to be considered.

For instance, aviation and shipping operate in the air and water. This means the modelling must account for winds and currents.

As another example, the practice of “slow steaming” – when cargo ships reduce their speed to cut fuel use and emissions – was considered for shipping.

For aircraft, there are additional net radiative forcing effects. (Radiative forcing is a measure of the influence a climatic factor has on the radiant energy impacting Earth’s surface.) These effects are complex and include the formation of contrails (condensation trails), aircraft-induced clouds and ozone formation (secondary air pollutant).

The analysis was based on statistical modelling. That is, instead of estimating single emission values, we quantified the most likely value and a plausible range in emissions performance.

It is also very important that the estimates reflect Australian conditions. For instance, we specifically modelled emissions from ship types and sizes (bulk carrier and container ships) and aircraft (A320 and B737) commonly used in Australia.

The modelling included mode-specific aspects such as vehicle weight and capacity, passenger occupancy, payload, annual passenger and freight volumes, operational profiles, future efficiency improvements and travel distance.

Travel distance can be surprisingly different between modes, as the map below shows. Air transport generally has the smallest travel distance. Sea transport routes can be much longer (about 60%).

What does this mean for policy and people?

Mode shift from road and air to rail and shipping has unused potential in Australia. Our findings suggests governments should, where possible, promote this shift for environmental and climate change reasons.

Clearly, other aspects such as costs and practical barriers need to be considered. But, from an emissions perspective, mode shift could get the Australian transport sector much closer to net zero.

And, as individuals, we can often reduce our own impacts by choosing not to travel or using lower-emission transport modes for our personal travel and the products we buy.

The Conversation

Robin Smit is the founding Research Director at the Transport Energy/Emission Research (TER) consultancy.

ref. Wondering how to get from Brisbane to Melbourne without wrecking the climate? Our transport choices make a huge difference – https://theconversation.com/wondering-how-to-get-from-brisbane-to-melbourne-without-wrecking-the-climate-our-transport-choices-make-a-huge-difference-237396

Harris’ win probability falls slightly after Democratic convention and Kennedy withdrawal

Source: The Conversation (Au and NZ) – By Adrian Beaumont, Election Analyst (Psephologist) at The Conversation; and Honorary Associate, School of Mathematics and Statistics, The University of Melbourne

The United States presidential election will be held on November 5. In analyst Nate Silver’s aggregate of national polls, Democrat Kamala Harris leads Republican Donald Trump by 48.8–45.0. In my previous US politics article last Sunday, Harris led Trump by 48.8–44.8.

Joe Biden’s final position before his withdrawal as Democratic candidate on July 21 was a national poll deficit against Trump of 45.2–41.2. By the election, Biden will be almost 82, Trump is now 78 and Harris will be 60.

There were two developments last week that potentially changed the polls. First, the Democratic National Convention was held from August 19–22. Second, Robert F. Kennedy Jr withdrew from the presidential contest and endorsed Trump on August 23. When he withdrew, Kennedy had only about 4% support in national polls.

The next event that could potentially change the race is the September 10 debate between Harris and Trump. The June 27 debate between Biden and Trump eventually led to Biden’s withdrawal.

Pennsylvania a problem for Harris

The US president isn’t elected by the national popular vote, but by the Electoral College, in which each state receives electoral votes equal to its federal House seats (population based) and senators (always two). Almost all states award their electoral votes as winner takes all, and it takes 270 electoral votes to win (out of 538 total).

In Silver’s model, Harris’ chance of winning the Electoral College has fallen from 53.2% last Sunday to 47.3%, with Trump now the favourite to win at 52.4% probability. Harris’ win probability peaked on August 14 at 57%. This is the first time Trump has been favoured to win since August 3.

The Electoral College is biased towards Trump relative to the national popular vote. In Silver’s model, Harris needs to win the popular vote by at least two points to be the Electoral College favourite.

A key reason for Harris’ drop is Pennsylvania, which has 19 electoral votes, the most of any of the swing states. If either Harris or Trump wins Pennsylvania, that candidate has about a 92% chance to win the Electoral College.

Silver wrote that recent polls in Pennsylvania have been weak for Harris, although his model does not yet include a Morning Consult poll that gave Harris a four-point lead in Pennsylvania.

I previously wrote that, from the point of view of maximising her chances to win the Electoral College, Harris should have selected Pennsylvania Governor Josh Shapiro as her running mate instead of Minnesota Governor Tim Walz. Democrats could regret this choice.

Another factor that is hurting Harris is the model’s convention bounce adjustment. Convention bounces usually peak a week after the convention, then fade in the next few weeks. I previously wrote that Harris needed to be leading by four to five points nationally in polls conducted after the Democratic convention to maintain her win probability.

Harris’ national lead of 3.8 points is just below the lower bound where she would maintain her win probability. If her national lead is unchanged in the next two weeks, her win probability will increase again. But the model expects Harris’ lead to drop in the next two weeks.

Further analysis

It’s possible that Kennedy’s withdrawal and endorsement of Trump has changed some of his voters into Trump voters. In most polls before Kennedy’s withdrawal, Harris benefited from his inclusion compared with a Harris vs Trump head to head version.

The initial surge for Harris was probably driven by relief at Biden’s withdrawal. Biden now has a net approval of -12.9 in the FiveThirtyEight aggregate, an improvement from -17.1 when he withdrew on July 21. But his unpopularity is still likely to hurt Harris, who is campaigning on a continuation of Biden’s policies.

After large gains in Harris’ net favourability in the first two weeks of her candidacy, her net favourability gains have stalled. Harris’ net favourability in the FiveThirtyEight tracker is -1.4, up from -16.0 on July 20, but a much smaller improvement from -3.9 on August 14.

I believe Harris’ honeymoon from replacing Biden is over, and it will be harder for her to make gains in polls now.

Trump’s net favourability has dropped back to -9.2 after gaining some ground following the mid-July Republican convention. Trump’s running mate JD Vance is at -9.8 net favourable, while Walz is at +4.8.

The Conversation

Adrian Beaumont does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Harris’ win probability falls slightly after Democratic convention and Kennedy withdrawal – https://theconversation.com/harris-win-probability-falls-slightly-after-democratic-convention-and-kennedy-withdrawal-237642

The balance battle: 5 reasons why dads are struggling with workplace flexibility

Source: The Conversation (Au and NZ) – By Alina Ewald, Associate Lecturer in Psychological Sciences, Western Sydney University

Natee Meepian/Shutterstock

Despite a rise in dual-earner families in Australia and men wanting to be more engaged with their kids, there are still major hurdles preventing dads from fully embracing formalised flexible working arrangements such as part-time work or parental leave.

This is a problem because we know if dads achieve work-family balance it benefits children, women’s employment and men’s wellbeing.

So why are dads finding it so challenging to adopt formal flexible working arrangements to help them as a parent?

As a fathering researcher focusing on mens’ adoption of flexibility, I have identified five main reasons.

Work-family balance barriers

1. Flexibility is often feminised

Flexibility can be associated with the “mummy career track”.

Modifying work after becoming a parent is positioned as being for women with children – rather than for dads.

When men do adopt flexibility for caring, some experience a backlash in the form of stigmatisation or discrimination, especially in relation to parental leave and returning to work – even when they take short periods of leave.

In fact, the Australian Human Rights Commission found men were twice as likely to have their leave requests rejected than women.

Recent Australian data show only 8% of organisations set targets for men’s engagement with flexible working.

This issue is driven by deep-seated gender norms and stereotypes about work and care and it results in men often being left out of the flexibility conversation.

2. There is an expectation for men to focus on their career

Men’s caring responsibilities are largely invisible in the workplace and
dads often get the message to prioritise career development and financial provision over being actively involved in their children’s daily care.

In relation to this, men report a lack of workplace acceptance for flexible working arrangements and a concern regarding the career penalties that could follow.

While the benefits of dads being more hands-on as a parent are clear – including positive outcomes for child development, for father-child bonding, and for men’s wellbeing – negative career implications are often cited as a prominent downside associated with some forms of flexibility.

Underpinning the expectation for men to be dedicated to their careers are masculine norms and the work devotion schema (a moral obligation to dedicate oneself to work).

However, Australian research shows men want more flexibility and some are even willing to change their job to achieve this.

Many fathers are trying to work more flexibly to benefit their family lives.

3. Men don’t know what they are entitled to

There is sometimes a lack of awareness from men and a lack of resources from employers surrounding what men are entitled to.

Many dads aren’t fully aware of the work-family policies available to them or where to look. They are sometimes reluctant to ask employers directly due to a perceived lack of entitlement or fears around negative judgement.

As a result, when it comes to finding out about flexibility, men often have to dig around on their own to figure out what they are actually able to use.

The lack of readily available information for men reinforces the message that flexibility for parenting is not really designed for dads.

To help overcome this issue, organisations should ensure they have conversations with fathers, and not just with mothers, about adjusting their work schedules when they have children.

4. Occupational barriers

Men in different positions within organisations face distinct challenges when attempting to adopt flexible caregiving arrangements.

Those in high-status roles such as senior workers or managers have a lot of control over their work hours but they are often reluctant to adopt formal flexibility for caring due to concerns it may signify a lack of commitment to work.

In contrast, men working in lower-status roles report a lack of power to request flexibility and some report having requests denied or being pressured to not access flexibility options.

5. A lack of male role models

There is a lack of role-modelling from other men and a lack of spaces for men to learn from each other about working flexibly.

Men also report being hesitant about using flexible work arrangements because they don’t see their leaders embracing or setting an example themselves. This leads to concerns it could result in negative outcomes, leading to missed promotions or career opportunities.

Having more male leaders working flexibly for family reasons would set an example for other men but barriers exist due to expectations from some leaders to be present at work.

Where to from here?

In order for things to change, men’s caregiving roles must become more visible at work and organisations must better support dads in adopting flexibility for caring purposes.

Some effective ways to improve the situation include having male leaders model flexibility, organisations promoting the idea that flexibility is for dads too and telling men about their work-family entitlements when they become, or are about to become, a father.

The Conversation

Alina Ewald does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. The balance battle: 5 reasons why dads are struggling with workplace flexibility – https://theconversation.com/the-balance-battle-5-reasons-why-dads-are-struggling-with-workplace-flexibility-237317

Computer ‘reconstructions’ of faces from ancient times are popular. But how reliable are they?

Source: The Conversation (Au and NZ) – By Konstantine Panegyres, McKenzie Postdoctoral Fellow, researching Greco-Roman antiquity, The University of Melbourne

macondo/Shutterstock

When we read about the lives of people from the ancient past, we naturally want to know what they looked like.

But how do we find this out?

In recent years, computer-assisted reconstructions of the faces of famous figures from the Greco-Roman world have become popular.

In 2020, for example, a digital artist went viral for using artificial intelligence (AI) technology on the busts of Roman emperors to recreate their faces in a photo-realistic way.

How are facial reconstructions done?

The simplest form of facial reconstruction involves adding realistic-looking skin, eyes and hair to Greek or Roman busts. Other methods can be more complicated.

One of the most famous facial reconstructions of any individual from the Greco-Roman world was the case of Hermione Grammatike. Hermione was a teacher in her 20s who died in Egypt in the early 1st century CE.

Hermione’s ancient portrait and skeleton both survived with her mummy. So, any attempt to reconstruct her face on the basis of the skeletal remains could be compared with the portrait of her.

In 1997, British Museum researchers used CT (computed tomography) scans to create a 3D image of Hermione’s face.

After reconstructing the surface of the face using the skull, the researchers then consulted the coffin portrait to nuance the details.

In spite of this rigorous combination of methods, they acknowledged difficulties:

Since the skull does not carry enough information to completely determine the facial surface, facial reconstruction from skulls will always contain an element of art. The reconstructed face is likely to resemble that of the living person but is very unlikely to be an exact replica.

So, even with careful techniques, there still remain some doubts about facial reconstruction.

But such reconstructions are becoming more accurate. This is largely thanks to new methods of DNA extraction and analysis, which make it possible to work out the correct colours of people’s hair, skin and eyes.

How reliable were ancient portraits of people?

Basing reconstructions of people’s faces on their surviving busts or portraits is not an entirely safe procedure.

In some cases, there are discrepancies between ancient portraits of people and ancient literary descriptions of what they looked like.

A stone bust of a balding man with a short beard on a black background.
A Roman bust in the Louvre Museum, Paris, widely regarded as a depiction of Aristotle based on an earlier Greek original from the late 4th century BCE.
Wikimedia Commons, CC BY

For example, according to ancient texts, the philosopher Aristotle was bald or (alternatively) had short hair and a short beard, as well as small eyes. He wore rings on his fingers and luxurious clothes.

However, ancient busts that have been identified as depicting Aristotle show him with a full beard and plenty of hair.

This raises a new problem: which pieces of information are more reliable – the ancient artwork or the ancient literary description? In cases such as these, it seems almost impossible to decide.

But some ancient portraits must have been fairly accurate depictions of their subjects.

A Greek poem from the 1st century CE describes a boxer who became so disfigured by his sporting profession, he no longer resembled his official portrait. In a dispute over their father’s inheritance, the boxer’s brother showed the boxer’s portrait in a court of law and successfully claimed the boxer was not actually his brother – thus denying his inheritance. This case shows some ancient portraits must have been accurate enough to even be used as a sort of legal proof of identity.

Other authors indicate portraits were not always made solely for accuracy. The Roman writer Claudius Aelianus informs us that

in Thebes a law was in force which instructed artists – both painters and sculptors – to make their portraits flattering. As punishment for those who produced a sculpture or painting less attractive than the original the law threatened a fine of a thousand drachmae.

The wish to see historic faces is universal

In around 39 BCE, the Roman scholar Marcus Terentius Varro published a collection of famous people’s portraits, “not allowing their likenesses to disappear or the lapse of ages to prevail against immortality in men”.

Varro’s collection apparently included 700 portraits of famous historical Greek and Roman people, and each portrait was accompanied by an epigram and brief biography. This collection must have satisfied the wish of the public to know what the faces of famous people looked like.

Clearly, ancient and modern people share this fascination.

We can surely enjoy reconstructions of the faces of people from ancient times. We just need to keep in mind two important issues.

Firstly, ancient portraits and busts were themselves not always reliable depictions of people, so reconstructions based on them are of uncertain accuracy.

Secondly, modern researchers acknowledge that reconstructions based on skulls have limitations, though the accuracy of this method is rapidly improving.

So, the next time you see a reconstruction of some ancient person’s face, be cautious before thinking that you are really looking at the exact, almost photographic likeness of someone from the past. You might be – or you might not.

The Conversation

Konstantine Panegyres does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Computer ‘reconstructions’ of faces from ancient times are popular. But how reliable are they? – https://theconversation.com/computer-reconstructions-of-faces-from-ancient-times-are-popular-but-how-reliable-are-they-236516

Lower speeds on local streets cut deaths and injuries by a quarter in Wales. Over 100 experts want Australia to do the same

Source: The Conversation (Au and NZ) – By Jennifer L. Kent, Senior Research Fellow in Urbanism, University of Sydney

The Bureau of Infrastructure, Transport and Research Economics (BITRE) has released its latest road deaths bulletin. The results are terrifying.

Each month, someone at the bureau has the bleak task of contacting state police to determine how many people have been killed on our roads. If the bureau had a tendency to shoot its messengers (and I’m not saying it does), this month’s courier would have tabled the stats and quickly ducked for cover.

In July, 124 people died on Australian roads. This toll was 31.6% higher than the July average for the past five years. In July 2024, 40 more people died on our roads than in July 2019. That’s 40 daughters, sons, brothers, sisters, mothers and fathers.

The July figures were not a monthly blip. The 1,327 lives lost in the year ending July 2024 marked a 10.2% increase from the preceding 12 months. It was the worst 12-month toll since 2012.

And for every death, an estimated 20 people are hospitalised for serious road trauma. These numbers are not only shocking, they are shameful. More than 100 of Australia’s top transport and urban researchers have now signed an open letter calling for lower speed limits on local streets. The evidence they cite from overseas is clear: lower speed limits will save lives.

Why is the road toll rising?

Road casualties are on the increase for multiple reasons.

The most obvious one is the bigger cars we are driving. Our large SUVs and twin-cab utes are much safer – but only if you’re on the inside. Their sheer mass can make a mess of any vulnerable human flesh that gets in their way.

Which brings me to the real tragedy here: we know exactly what to do to reverse this trend; we just don’t have the political will to do it.

You see, road trauma is actually a straightforward matter of physics. The embedded kinetic energy in a moving vehicle is released on impact – whether it be with a street sign, tree or child. The faster a vehicle is travelling and the greater its mass, the more energy is released. And it’s the energy that kills – either as it’s dispersed through a vehicle or through someone’s body.

This means that if a child is hit by a car doing 50km/hour, there is a 90% chance that child will die. But if that car is doing 30km/h, the child has a 90% chance of living. Yes, it is simple physics, with devastating implications when ignored.

Speed is the key to reducing road trauma. Yet here in Australia we maintain the third-highest default local speed limit in the OECD. In most Australian states, the limit is 50 kilometres per hour (km/h). That’s well above the World Health Organization’s recommended 30km/h wherever cars and vulnerable road users interact.

We have tinkered around the edges with slower speeds in school zones and areas with particularly high numbers of pedestrians. Some forward-thinking local councils have reduced speed limits across their area, usually to 40km/h. But we know the real gains come when speeds of 30km/h are applied not just in specific locales, but across the entire local road network. Just ask Wales…

Welsh experience is compelling

In September 2023, Wales decreased the default speed limit for local roads to 20 miles per hour (roughly equivalent to 30km/h). As a result, this new speed limit applied to the vast majority of these roads, whereas before the change the vast majority had a 30mph (50km/h) limit.

The politician responsible for this change, Lee Waters, has been touring Australia this month, speaking about this and other game-changing sustainability and wellbeing legislation enacted on his watch. His courage in pushing this unpopular move through paid off. In just three months, the casualties (combined death and serious injury rates) on local roads in Wales dropped by 26% to 377, from 510 in the same period for the previous year.

What’s also notable about the Welsh experience is that, in terms of the blockbuster budgets typical of road projects, it hardly cost a penny. Authorities simply educated the public and changed the road signs. There wasn’t even much legal enforcement.

Instead, the public responded to the message and started driving more slowly. While it’s not quite as slow as the Welsh government’s ultimate aim, it’s a good start. Because it’s slow enough to save lives.

So what’s stopping Australia?

This is very different to the story in Australia. Here, our policies and politics imply that the only way to slow cars is to radically redesign our roads. Apparently, we need to make our streets “intuitively” slow by narrowing them and putting in speed humps.

This kind of intervention needs funding – which is currently tied up in more politically palatable programs of road building and maintenance. As a result, our vehicle speeds remain fast – and fatal.

But Wales has clearly shown that streets can be slowed by reducing the posted speed limit, backed up by community education and strategic enforcement. Of course, road safety infrastructure is also needed, but while we wait for it to be funded and constructed, road trauma continues to tear people’s lives apart.

Coinciding with Lee Waters’ visit to Australia, the open letter from more than 100 academic experts concludes:

The urgency of the epidemic of road trauma in Australia demands a more proactive and timely response, and political leaders are at the helm of change. The evidence is unequivocal that Australian lives are in your hands. Please, slow speeds on local streets.

Jennifer L. Kent receives funding from the Australian Research Council.

ref. Lower speeds on local streets cut deaths and injuries by a quarter in Wales. Over 100 experts want Australia to do the same – https://theconversation.com/lower-speeds-on-local-streets-cut-deaths-and-injuries-by-a-quarter-in-wales-over-100-experts-want-australia-to-do-the-same-237330

Angry, wise, or plain horny? Zeus comes in many forms onscreen – just as he did in the original myths

Source: The Conversation (Au and NZ) – By Craig Barker, Head, Public Engagement, Chau Chak Wing Museum, University of Sydney

Netflix

With a flash of garish colour and the blaring of an ’80s rock track we are on Mount Olympus, home to the pantheon of ancient Greek gods and goddesses.

But its not the Mount Olympus you’d normally think of. It’s an opulent house with large-screen TVs and gold watches. Overseeing it all is mighty Zeus, the king of the gods, played by Jeff Goldblum.

Netflix’s new six-part series, KAOS, is a brilliant reimagining of classical mythology for the 21st century. Created by Charlie Covell, writer on The End of the F***ing World (2017–19), the series follows six humans who learn they are part of a larger prophecy – their fates at the mercy and whims of the Olympian gods.

Narrated by Prometheus (Stephen Dillane), the series is darkly comedic in its exploration of themes from the original myths, such as power and abuse, gender politics and life after death.

Goldblum’s take on Zeus is mercurial. Powerful, but petulant and selfish, his Zeus is insecure. It’s a fascinating take on the god. “My character is complicated and charismatic, not to mention cruel,” the actor revealed in an interview.

The ancient Greeks themselves were ambiguous about Zeus. He could be a fearful figure or a humorous one. He ended up with dozens of epithets, ranging from Areius (“warlike”) to Zygius (“presider over marriage”), and most commonly Olympios and Panhellenios to signify his divine power over gods and humans alike.

Hollywood has similarly found a variety of ways to present Zeus, but usually in supporting roles (unlike in KAOS, where Zeus takes centre stage). In fact, one early cinematic appearance of the god was at the birth of filmmaking itself, in Georges Méliès’ silent film Jupiter’s Thunderballs (1903).

Zeus the powerful and vengeful god

Zeus (and his Roman equivalent Jupiter) was the god of sky and thunder in the Greek pantheon on Mount Olympus, and the father of many heroes and demigods of classical mythology. His main visual attribute was the lightning bolt, which is hinted at cleverly in a number of scenes in Goldblum’s performance.

The most common portrayal of Zeus in film and television is that of a vengeful and wrathful god who interferes with and manipulates the activities of others.

In Clash of the Titans (1981), a retelling of the myth of Perseus, Zeus (Laurence Olivier) manipulates the gods to support Perseus.

And this continues in the 2010 remake and its sequel, Wrath of the Titans (2012), in which Zeus (Liam Neeson) is an active participant in a plot centred on the struggle against Hades.

In the film Immortals (2011), although Zeus is often detached from the plot and merely observes, he is ultimately roused to action by anger.

Similarly, in the Percy Jackson films and TV series (based on Rick Riordan’s books), Zeus is characterised by his anger directed at Percy as he accuses him of stealing his lightning bolt.

Zeus the lustful abuser

Zeus was, well… there is no other way of saying it… horny. Incredibly horny. Despite the long-suffering protestations of his wife (and sister), Hera, Zeus would go on to father innumerable gods and demigods in the original myths.

His affairs with both divine and mortal women were almost always non-consensual and always ended badly for the seduced woman, who would either immediately die upon seeing Zeus in divine form or suffer the inventive vengeance of Hera. As Susie Donkin explained in the title of her 2020 book: Zeus is a Dick.

Unlike many filmed portrayals of Zeus, KAOS does not shy away from this aspect of his behaviour. But it is perhaps best represented in the adult animated series Blood of Zeus (2020-), in which much of the plot is driven by the aftermath of Zeus’ sexual proclivities.

Zeus the father figure

Hercules (Herakles in Greek) is one of the most filmed characters of all time, so the appearance of Zeus as his father is expected.

Perhaps most fondly remembered by all is Disney’s film Hercules (1997), in which Zeus (voiced by Rip Torn) is a warm and wise father. “For a true hero isn’t measured by the size of his strength, but by the strength of his heart,” he advises his son.

Hercules in New York (1970) is a cult film best known as Arnold Schwarzenegger’s first (dubbed) role as the titular strongman in contemporary New York. Here, Zeus (Ernest Graves) is responsible for Hercules’ exile – angry, but wanting the best for his son.

Anthony Quinn played Zeus in the TV movie The Circle of Fire (1994), which kick-started the TV series Hercules: The Legendary Journeys (1995–99) and its spin-off Xena: Warrior Princess (1995-2001). Zeus appeared periodically in both. Although Hercules in the series often referred to the neglectfulness of his father, Zeus is still presented as a loving parent in each appearance.

Zeus the comical

Zeus is also perfect to poke fun at. The ancients did it; in Aristophanes’ comedic play The Birds, for example, Zeus’ all-seeing vision is blocked by merely a raised parasol.

Perhaps the best example of this in modern cinema is Russell Crowe’s depiction in the Marvel movie Thor: Love and Thunder (2022). In this campy take, Zeus is all lightning bolts, with a toga that hides very little, and a controversial Greek accent.

But there was also a poignancy in Crowe’s Zeus, such as when he states:

It used to be that being a god, it meant something. People would whisper your name, before sharing their deepest hopes and dreams. They begged you for mercy, without ever knowing if you were actually listening. Now, when they look to the sky, they don’t ask us for lightning, they don’t ask us for rain, they just want to see one of their so-called superheroes. When did we become the joke?

Just as the ancient Greeks had many versions of Zeus, so does the modern world. And Jeff Goldblum’s brilliant performance suggests we certainly haven’t seen the last of Zeus’ thunderbolts onscreen.

Craig Barker does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Angry, wise, or plain horny? Zeus comes in many forms onscreen – just as he did in the original myths – https://theconversation.com/angry-wise-or-plain-horny-zeus-comes-in-many-forms-onscreen-just-as-he-did-in-the-original-myths-237477

A quantum neural network can see optical illusions like humans do. Could it be the future of AI?

Source: The Conversation (Au and NZ) – By Ivan Maksymov, Principal Research Fellow at AI and Cyber Futures Institute, Charles Sturt University

Master1305 / Shutterstock

Optical illusions, quantum mechanics and neural networks might seem to be quite unrelated topics at first glance. However, in new research I have used a phenomenon called “quantum tunnelling” to design a neural network that can “see” optical illusions in much the same way humans do.

My neural network did well at simulating human perception of the famous Necker cube and Rubin’s vase illusions – and in fact better than some much larger conventional neural networks used in computer vision.

This work may also shed light on the question of whether artificial intelligence (AI) systems can ever truly achieve something like human cognition.

Illustration of Necker cube and Rubin's vase optical illusions.
The Necker cube (left) and Rubin’s vase (right). Each has two interpretations. Is the shaded face of the cube at the back or the front? And do you see two people looking towards each other or a vase?
Ivan Maksymov

Why optical illusions?

Optical illusions trick our brains into seeing things which may or may not be real. We do not fully understand how optical illusions work, but studying them can teach us about how our brains work and how they sometimes fail, in cases such as dementia and on long space flights.

Researchers using AI to emulate and study human vision have found optical illusions pose a problem. While computer vision systems can recognise complex objects such as art paintings, they often cannot understand optical illusions. (The latest models appear to recognise at least some kinds of illusions, but these results require further investigation.)

My research addresses this problem with the use of quantum physics.

How does my neural network work?

When a human brain processes information, it decides which data are helpful and which are not. A neural network imitates the function of the brain using many layers of artificial neurons that enable it to store and classify data as useful or not beneficial.

Neurons are activated by signals from their neighbours. Imagine each neuron has to climb over a brick wall to be switched on, and signals from neighbours bump it higher and higher, until eventually it gets over the top and reaches the activation point on the other side.

In quantum mechanics, tiny objects like electrons can sometimes pass through apparently impenetrable barriers via an effect called “quantum tunnelling”. In my neural network, quantum tunnelling lets neurons sometimes jump straight through the brick wall to the activation point and switch on even when they “shouldn’t”.

Why quantum tunnelling?

The discovery of quantum tunnelling in the early decades of the 20th century allowed scientists to explain natural phenomena such as radioactive decay that seemed impossible according to classical physics.

In the 21st century, scientists face a similar problem. Existing theories fall short of explaining human perception, behaviour and decision-making.

Research has shown that tools from quantum mechanics may help explain human behaviour and decision-making.

While some have suggested that quantum effects play an important role in our brains, even if they don’t we may still find the laws of quantum mechanics useful to model human thinking. For example, quantum computational algorithms are more efficient than classical algorithms for many tasks.

With this in mind, I wanted to find out what happened if I injected quantum effects into the workings of a neural network.

So, how does the quantum tunnelling network perform?

When we see an optical illusion with two possible interpretations (like the ambiguous cube or the vase and faces), researchers believe we temporarily hold both interpretations at the same time, until our brains decide which picture should be seen.

This situation resembles the quantum-mechanical thought experiment of Schrödinger’s cat. This famous scenario describes a cat in a box whose life depends on the decay of a quantum particle. According to quantum mechanics, the particle can be in two different states at the same time until we observe it – and so the cat can likewise simultaneously be alive and dead.

I trained my quantum-tunnelling neural network to recognise the Necker cube and Rubin’s vase illusions. When faced with the illusion as an input, it produced an output of one or the other of the two interpretations.

Over time, which interpretation it chose oscillated back and forth. Traditional neural networks also produce this behaviour, but in addition my network produced some ambiguous results hovering between the two certain outputs – much like our own brains can hold both interpretations together before settling on one.

What now?

In an era of deepfakes and fake news, understanding how our brains process illusions and build models of reality has never been more important.

In other research, I am exploring how quantum effects may also help us understand social behaviour and radicalisation of opinions in social networks.

In the long term, quantum-powered AI may eventually contribute to the development of conscious robots. But for now, my research work continues.

The Conversation

Ivan Maksymov does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. A quantum neural network can see optical illusions like humans do. Could it be the future of AI? – https://theconversation.com/a-quantum-neural-network-can-see-optical-illusions-like-humans-do-could-it-be-the-future-of-ai-237645

NZ’s Space Agency is both regulator and developer of the aerospace industry – that’s a point of tension

Source: The Conversation (Au and NZ) – By Priyanka Dhopade, Senior Lecturer in Mechanical Engineering, University of Auckland, Waipapa Taumata Rau

Phil Walter/Getty Images

Like the global space industry, which aims to reach a value of US$1.8 trillion by 2035, New Zealand’s aerospace sector is growing rapidly.

But as our latest research shows, it is falling short on addressing urgent sustainability issues because of a perception this would incur short-term costs and slow growth.

Many countries are prioritising the development of national space strategies. Usually, these include plans to increase access to venture capital, grow a specialist workforce and develop flexible regulations and sovereign defence capabilities.

But sustainability leadership in space is crucial, given rising concerns over space debris, and emerging issues such as ozone depletion from rocket launches and the accumulation of alumina and soot particles in Earth’s atmosphere as re-entering objects burn up.

The politics of growth

New Zealand’s aerospace regulatory system was catalysed by Rocket Lab USA’s commercial decision to launch rockets from a spaceport on the Māhia peninsula.

This was followed by the establishment of New Zealand’s Space Agency. This small unit of the Ministry of Business, Innovation and Employment (MBIE) regulates launch payloads and fosters business development by facilitating access to funding for commercial ventures and scientific research.

Rocket Lab's Electron rocket lifts off from its launch site in Mahia
Rocket Lab’s Electron rocket lifts off from its launch site.
Marty Melville/AFP via Getty Images

A central component of New Zealand’s commercial aerospace activity is a bilateral agreement with the US. This enables the launch of American payloads aboard Rocket Lab’s Electron vehicle, negotiated in part by the Space Agency.

MBIE targets an annual revenue of NZ$10 billion by 2030. This is in alignment with New Zealand’s 2023 aerospace strategy and national space policy, and is supported by the appointment of New Zealand’s first cabinet minister for space.

But our study suggests the Space Agency’s dual role as regulator and sector developer introduces a conflict of interest between promoting sustainability and fostering economic growth. This tension is exacerbated by current budget constraints which place too high a demand on the agency’s resources to fulfil both commitments.

The government is simultaneously a customer, investor and regulator of the sector. Yet, it is being relied upon for leadership in sustainability.

Expectations versus reality

Companies are looking to the government for incentives to prioritise sustainability, such as monitoring emissions and pollutants from launches.

The Space Agency has progressed a space debris removal policy, but some say this is not proactive enough. Already, more than 80% of the objects in Earth’s orbits are junk.

The policy does not keep pace with the growing number of market entrants, which will generate a larger environmental footprint on and off Earth.

Minister for Space Judith Collins says her office works with the Ministry for the Environment, the Environmental Protection Authority and industry representatives such as Rocket Lab to “ensure that potential harms to the environment are monitored and mitigated”.

However, this commitment lacks quantifiable details and is not reported in any government documentation. This creates a vacuum where no party (government, industry or the public) assumes responsibility for sustainability.

A sustainability leadership vacuum

The absence of sustainability leadership allows nations with “soft” power, such as the US, to set the rules through the control of resources and norms, such as the renewed goal to head back to the Moon.

To navigate this challenge, we need leadership through international cooperation as well as a robust domestic approach to encouraging and rewarding sustainability initiatives.

Recent initiatives, including small prizes and seed funding for feasibility studies, along with efforts to streamline regulatory approvals, have been announced to aid the growth of the sector.

However, while there is a strong push for accelerated growth, the documents lack clarity on the investment required to sustain business development.

Unlike other countries where government co-financing often plays a crucial role in advancing space-related technologies, New Zealand’s approach to financial support – whether through grants, loans, tax incentives or employment regulations – remains poorly defined.

While the national space policy document cites sustainability values, it falls short of outlining specific approaches or initiatives. Notably, it lacks a clear working definition of sustainability.

The need for clarity and balance

As the aerospace sector grows – amid the uncertainties of climate change, rapid technological developments and continued American influence – we need to clarify the relationship between public and private actors.

Specifically, we need clear guidelines on who is responsible for balancing growth and regulation with environmental and social impacts of industrial activities.

The aerospace sector could benefit from looking to other economically-driven industries that willingly participate in sustainability initiatives, such as the Sustainable Business Network and the B Corp movement.

This approach would address space sustainability concerns in a more balanced manner, as opposed to the growth-driven mindset that often disregards sustainable development.

By shifting the mindset, we can pave the way for a more responsible and forward-thinking aerospace sector.

The Conversation

Catherine Qualtrough is affiliated with Aerospace Auckland/NZ.

Priyanka Dhopade does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. NZ’s Space Agency is both regulator and developer of the aerospace industry – that’s a point of tension – https://theconversation.com/nzs-space-agency-is-both-regulator-and-developer-of-the-aerospace-industry-thats-a-point-of-tension-236255

What are puberty blockers? What are the benefits and risks for transgender children?

Source: The Conversation (Au and NZ) – By Sasha Bailey, PhD Candidate and Research Assistant, The Matilda Centre for Research in Mental Health and Substance, University of Sydney

morrowlight/Shutterstock

Puberty blockers are medications that stop the body from producing oestrogen and testosterone. In the clinic, they’re called gonadotropin-releasing hormone agonists (GnRHa).

If adolescents take these medications during puberty, bodily changes associated with puberty are prevented. If these medications are stopped, these bodily changes resume.

Puberty blockers have been used since the early 1980s to treat early-onset puberty in young children.

Beginning in the 1990s, puberty blockers have also been used in transgender adolescents to help prevent the unwanted development of masculinising or feminising physical changes that occur during puberty.

What are the benefits for transgender adolescents?

Many transgender children describe anxiety about unwanted physical changes that will occur because of puberty, especially as adolescence approaches.

For those presumed female at birth, these unwanted changes include breast development and starting periods. For those presumed male at birth, these unwanted changes may include the development of a deeper voice, an Adam’s apple, facial hair and a masculine physique.

Many of these physical changes are irreversible and result not only in gender dysphoria but also misgendering. This is when transgender people are mistakenly assumed to be the gender they were presumed at birth. Misgendering can be a significant and lifelong source of distress.

Some transgender people will seek out surgery to address these unwanted irreversible changes. This might be to masculinise their chest, feminise their face, alter their voice, or reduce their Adam’s apple.

For transgender young people and their families, the most obvious benefits of puberty blockers are to avoid unwanted changes that come with puberty. It can also reduce misgendering and prevent the need for future surgery.

Non-binary person at a barbershop
Puberty blockers can reduce misgendering.
TOEMPHONG KOIKEP/Shutterstock

Several studies have assessed the potential benefits of puberty blockers. A 2024 systematic review of the research found consistent evidence showing they effectively suppressed puberty.

The study the review authors identified as being the highest quality found significantly improved psychological outcomes. Puberty blockers reduced suicidal thoughts and actions in transgender adolescents compared to those who had not accessed the treatment.

When should puberty blockers be started?

Puberty blockers can only be started once puberty has commenced. The age at which this occurs varies considerably between individuals. To avoid unwanted physical changes, puberty blockers should ideally begin in early to mid-puberty.

However, many transgender adolescents have been started on puberty blockers in late puberty or even after puberty has finished.

In England, for example, at least 12 months of puberty-blocker treatment was previously mandatory for any transgender adolescent under 18 who wished to access oestrogen or testosterone. This resulted in many young people starting puberty blockers well after their puberty was complete.

One potential problem with commencing puberty blockers beyond early or mid-puberty is that unwanted physical changes have already occurred, so many benefits of this treatment are no longer expected to occur.

The recent systematic review on puberty blockers noted that, while many studies saw improvements in psychological wellbeing, others failed to observe a difference. One possible explanation is that none of these studies accounted for the stage of puberty at which treatment was commenced.

Notably, a more recent study from Harvard University confined the analysis to treatment with puberty blockers in early to mid puberty. It found treatment was associated with significant reductions in anxiety, depression and suicidal thoughts.

Risks of puberty blockers for transgender adolescents

Puberty blockers are generally well-tolerated. But as with any medical intervention, they can also cause unwanted effects. This includes reductions in bone density and fertility, and changes in adult height.

When started beyond early to mid puberty, they are more likely to cause menopausal-like side effects, such as hot flashes. This is due to a reduction in sex hormone production.

Girl looks at her father warmly
Puberty blockers are usually well-tolerated but come with potential side effects.
Alena Ozerova/Shutterstock

There are also potential long-term effects of puberty blockers that are still being investigated.

Brains mature substantially during adolescence. But it remains unclear what effect puberty blockers may have on cognitive development. While the use of puberty blockers in early-onset puberty has not been shown to affect cognitive functioning, studies in transgender adolescents are ongoing.

Where are the randomised controlled trials of puberty blockers?

Randomised controlled trials are typically considered the gold-standard way to study the effectiveness of medical interventions.

To date, there have been no randomised controlled trials of puberty blockers for transgender adolescents, which has led some to label this treatment as experimental. However, conducting such trials of hormonal interventions in transgender youth is problematic, as it would be unethical to withhold treatment for research purposes.

It’s common not to have data from randomised controlled trials in paediatric care more broadly. The use of puberty blockers for early puberty displays similar research gaps.

However, the politicisation of trans young people has seen the use of puberty blockers in transgender adolescents held to a different standard.

How are puberty blockers accessed in different clinical settings?

In the United Kingdom, puberty blockers will now only be accessed by transgender adolescents via the National Health Service (NHS) in a research setting, following the adoption of recommendations by the Cass review, which reviewed gender identity services available to children and young people via the NHS.

One of the main criticisms of the review was it failed to consider the likely harms of denying transgender adolescents hormonal interventions.

In Australia, health experts have also cautioned against comparing our health system to the NHS and highlighted that many of the review’s recommendations align with existing practices within Australian specialist gender services.

Puberty blockers in Australia are accessed by transgender adolescents as part of a comprehensive, team-based approach to gender-affirming care. This emphasises holistic, individualised care which considers the young person’s stage of puberty, while balancing potential benefits and risks.

The Conversation

Sasha Bailey receives research funding from The Matilda Centre for Research in Mental Health and Substance Use, Suicide Prevention Australia, and The Pride Foundation. She is Secretary of the NSW Branch of Public Health Association of Australia, Secretary of GLBTIQ Multicultural Council, and Early Career Member of the Editorial Board of Prevention Science. Sasha currently serves on the ACON Research Ethics Review Committee, Family Planning Australia Research Ethics Committee, and Community Mental Health & Drug and Alcohol Research Network Research Ethics Consultation Committee.

Dr Cristyn Davies receives funding from the Australian Research Council and the Medical Research Future Fund. Dr Davies reports voluntarily being President of the Australian Association for Adolescent Health; co-chair of the Human Rights Council of Australia; co-chair of the Child and Youth Special Interest Group for the Public Health Association of Australia; an ambassador to Twenty10 Incorporating the Gay and Lesbian Counselling Service of New South Wales; and co-chair of the research committee for the Australian Professional Association for Trans Health.

Ken Pang is a paediatrician at the Royal Children’s Hospital in Melbourne. He receives research funding from the Australian National Health and Medical Research Council, the Medical Research Future Fund, the Royal Children’s Hospital Foundation, and the Hugh D T Williamson Foundation. He is a member of the Australian Professional Association for Trans Health, the World Professional Association for Transgender Health, and the editorial board of the journal, Transgender Health.

Rachel Skinner is a paediatrician at the Sydney Children’s Hospitals Network and receives research funding from the National Health and Medical Research Council, the Medical Research Future Fund and the Australian Research Council. She has professional memberships with the Australian Professional Association of Transgender Health and the World Professional Association of Transgender Health.

ref. What are puberty blockers? What are the benefits and risks for transgender children? – https://theconversation.com/what-are-puberty-blockers-what-are-the-benefits-and-risks-for-transgender-children-226006

Would a tech tax be a fair way to make Google and Meta pay for the news they distribute and profit from?

Source: The Conversation (Au and NZ) – By Anya Schiffrin, Senior Lecturer in Discipline of International and Public Affairs, Columbia University

Shutterstock

As the News Media Bargaining Code agreements in Australia start to wind down, there is discussion about what will come next. Media academic Andrea Carson calls the codes, passed in 2021, “world-first” legislation because Australia was the first country to use competition law to get Google and Meta to pay news publishers for the news they distribute and profit from.

According to former chair of the Australian Competition and Consumer Commission (ACCC) Rod Sims, about A$250 million flowed to news publishers each year. It’s just a fraction of what would have been a fair price.

Globally, the code has had an enormous impact. Countries that have discussed putting in their own versions have immediately seen Google strike deals with local publishers in an effort to forestall legislation.

The amounts paid out are far less than what is owed. If there were equal bargaining power and Google had to pay for the intellectual property produced by others which it made use of, it would be much more. But something is better than nothing. Thanks to the Australian law, Google has paid out tens of millions of dollars to publishers around the world. We will never know the exact amount, as Google requires publishers to sign non-disclosure agreements.

Google is, of course, dependent on news to make its search more attractive to audiences and advertisers. Research in several countries has also shown just how important quality news is for Google.

Not surprisingly, Google has mounted full-on campaigns against code-type legislation in Brazil, South Africa, California, Indonesia and other countries where it has been proposed.

Meta, which owns Facebook, has been, if anything, even worse. It has been adamant about resisting paying for the news that passes over its platforms. It has threatened to drop all news from countries that adopt and enforce legislation like the bargaining code, spooking regulators.

These tactics have been effective. The two firms have done a good job killing off proposed regulation in many markets.

Now with Meta saying it will pull out of news distribution in Australia, as it did in Canada, and Google reportedly saying it will only sign one-year deals with publishers, the question is: what will come next? Media reports suggest the government is considering a levy on tech companies.

Would a tech levy work?

The OECD has tried and failed to get a global agreement to raise corporate taxes – an agreement that would have prohibited digital taxes. In the meantime, the US government, influenced by its tech giants, is strongly opposed to such taxes. US Treasury Secretary Janet Yellen has spent a good deal of time calling up her counterparts and telling them not to impose them.

However, since the US has essentially blocked a global agreement on corporate taxes, many countries have decided to keep or adopt digital services taxes. Indeed, more than 18 countries have such taxes and some 20 others have proposed them. According to PWC, these may be levied on online sales, digital advertising, data usage, e-commerce, or streaming services.

While levies on streaming services to fund local content have been put in place in France, Switzerland, Canada, Portugal and are coming into force in Spain, and they’re being discussed in Australia, no government has used the funds raised from digital service taxes to directly support journalism.

In theory, taxes on tech have advantages over bargaining codes. The Australian version of the bargaining code doesn’t fully resolve the problem of power imbalances between the large social media firms and the publishers, and there were no requirements to spend the money on journalism. In theory, a tax on tech could address these shortcomings.

However, before publishers start pushing for taxes on tech to support journalism, there are a few things to consider. Is there public support for giving the revenue raised to journalism rather than putting it into the general kitty to be spent by the government? If there is support for a tax to support journalism, who decides on the allocation? How could there be safeguards to ensure governments don’t use the funds to support their media allies?

It’s also important to remember that, of course, tech firms oppose taxes. They’ve offshored their revenues for years and resisted paying taxes. In the US, Maryland in 2021 passed a tax on digital advertising and the state has spent years fighting off multiple lawsuits. We should expect even more resistance to a tax than to the bargaining code.

Making tech firms pay for what they use to make money

The bargaining code addressed a simple issue: how to force the platforms to pay fairly for the intellectual property they were effectively stealing and which enhanced their profits, given the imbalance of powers in this market. In doing so, it helped address another major societal issue: how do we pay for quality journalism, a public good from which all benefit? It never pretended to adequately resolve that question, but at least it was a start.

Every country needs to address the theft of intellectual property that diminishes both the incentives and ability to produce the news on which we all — including the platforms — depend. The bargaining codes were a start.

But democratic governments should also publicly fund quality news media. With the platforms having appropriated for themselves so much of the advertising revenues on which the media used to depend, it is natural to turn to digital taxation. It is not a matter of either/or; it should be a matter of both/and. Pragmatism should prevail. As the economist Dean Baker says, “the best policy is the policy you can pass”.

This article was written with research assistance from Philip Crane, Emma Goldhaber, Reena Mensingh and Lei Zhu.

The Conversation

Anya Schiffrin does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Would a tech tax be a fair way to make Google and Meta pay for the news they distribute and profit from? – https://theconversation.com/would-a-tech-tax-be-a-fair-way-to-make-google-and-meta-pay-for-the-news-they-distribute-and-profit-from-237234

What if Big Oil championed – and profited from – the green transition? Here’s how it could work

Source: The Conversation (Au and NZ) – By Richard Meade, Senior Research Fellow in Economics and Social Sciences, Auckland University of Technology, and Adjunct Associate Professor, Centre for Applied Energy Economics and Policy Research, Griffith University

Getty Images

Like the petroleum industry itself, households are heavily invested in existing transport technologies. Getting oil and gas companies – and consumers – to switch to zero-emissions transport is a huge challenge.

We can’t presume battery electric vehicles (EVs) will displace fossil fuel vehicles any time soon. They are not accessible to most households and don’t offer radically better transport services. They drive on the same congested roads with the same speed limits.

On the supply side, electrifying entire transport fleets requires major infrastructure expansions. Even with strong demand, such infrastructures will struggle to displace Big Oil’s dominant and affordable alternative.

It’s a classic chicken-and-egg predicament. Consumers and vehicle makers won’t switch unless they are confident the required refuelling infrastructures will be available. But those infrastructures won’t materialise without sufficient demand.

Repurposing existing infrastructure to supply clean fuels could convince both consumers and vehicle manufacturers to make the switch. But what would that take?

Clean fuel alternatives

Major economies (including the United States, European Union and Japan) and car manufacturers, such as Toyota and BMW, are actively promoting clean hydrogen-based technologies such as hydrogen fuel cell vehicles. Toyota and some heavy vehicle manufacturers are also investing in vehicles that could combust clean hydrogen.

Whether “green hydrogen” might work for mass transport remains hotly debated. But it’s not the only possibility – biofuels made from renewable feedstocks have the potential to at least partly decarbonise transport (especially aviation).

And so‑called “drop-in fuels” could also substitute for fossil fuels. Known as e‑fuels, these are synthetic fuels made by combining hydrogen with carbon dioxide.

As such they could decarbonise transport faster and more widely because they can be used in existing vehicles – and supplied via existing infrastructures. A recent EU ban on new fossil fuel vehicle sales from 2035 was softened to allow for this.

As with EVs, vehicles running on clean hydrogen, biofuels or e‑fuels don’t revolutionise transport beyond reducing emissions. But they might get a head start on EVs by solving that chicken-and-egg problem: making possible the conversion of entire vehicle fleets to run on clean fuels, while developing the required refuelling infrastructures.

Getty Images
Electric vehicles charging in China: mass electrification requires massive new infrastructure.

Affordability and scale

Repurposing existing fossil fuel infrastructures to supply clean fuels could be faster and cheaper than building new ones, such as the massively expanded electricity systems required for mass EV adoption.

For example, zero-emissions hydrogen can be produced from natural gas, but the process itself produces greenhouse gas emissions. Carbon capture storage (CCS) – removing the emissions and storing them securely in geological structures such as depleted gas fields – is one possible solution.

The Intergovernmental Panel on Climate Change sees CCS as feasible and playing a significant role in reducing greenhouse emissions. This would mean oil companies could adapt to producing zero-emissions hydrogen while renewable hydrogen or e‑fuel production develops.

The required geological structures are located near oil and gas infrastructures, which could also be converted to transport the resulting clean fuels.

These technologies might not yet be economically viable. But the same was true of EVs only 20 years ago. Concerted investment – and production at scale – was pivotal in improving their economics.

Repurposing fossil fuel infrastructures also opens the door to converting existing vehicles to run on clean fuels. This requires little or no modification for drop-in fuels, which are substitutable for existing fuels by design. Alternatively, vehicles can be converted to combust clean hydrogen (or dual fuel mixtures).

This could be much more affordable – and attractive to vehicle owners – than buying new vehicles (even assuming suitable options were available).

Putting coal out of business

In the process, Big Oil could avoid its existing assets becoming sunset investments. Critically, it could also profit from repurposing its infrastructures, by decarbonising sectors currently dominated by the other major carbon polluter, coal.

For example, hydrogen is a more credible substitute than electrification in some large coal-consuming industries, such as steelmaking.

However, given the need for scale and co‑ordination, it’s unlikely individual oil and gas companies could profitably repurpose their infrastructures on their own.

But industry-wide agreement and co‑ordination to produce a particular clean energy (or mix of energies) could substantially reduce investment risks. Laws against collusion would likely prohibit such agreements, so targeted exemptions and close regulatory oversight would be needed.

Relatedly, firms might commit to accelerating the green transition in return for regulated – but guaranteed – rates of return. While not perfect, this strategy has a precedent in the way competing US electricity utilities became regulated monopolies.

Alternatively, franchise bidding could see firms pay to win a time-limited monopoly to achieve an accelerated green transition.

This has been used to support the rollout of other natural monopoly infrastructures such as water networks, toll roads, cable TV and fibre broadband. It creates a contest that Big Oil couldn’t afford to lose.

Once dominant but soon displaced: 1897 illustration of an early electric car made in France.
Getty Images

Repurposing the past

History offers relevant lessons. EVs were once a dominant automobile technology over a century ago. But they were quickly displaced with the arrival of affordable and convenient fossil fuel vehicles.

Emerging clean fuels hold the promise of fast refuelling and long ranges, combined with zero emissions, meaning the days of EVs could again be numbered.

Recall, too, that 19th-century investors accelerated the transition to rail by buying canals that competed with trains. They then either retired them or repurposed them as rail routes.

Had those investors anticipated motorised vehicles and roads displacing rail, they likely would have invested less. That they didn’t means current generations benefit from access to more railways than would otherwise be available.

The same is potentially true for the fossil fuel industry. Past investment in polluting infrastructures could benefit current and future generations if repurposing those infrastructures accelerates the green transition.

The Conversation

Richard Meade does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. What if Big Oil championed – and profited from – the green transition? Here’s how it could work – https://theconversation.com/what-if-big-oil-championed-and-profited-from-the-green-transition-heres-how-it-could-work-236232

What are ‘click frauds’ – and how can we stop them?

Source: The Conversation (Au and NZ) – By Monica Whitty, Professor of Software Systems and Cybersecurity, Monash University

Syed Qaarif Andrabi/Pexel

In the world of the internet, clicks are currency. The more people click on a website, social media post or an advertisement, the more that content generates revenue.

But cybercriminals can exploit this rapidly growing market for clicks through what are known as “click frauds”. And everyone, from everyday internet users to large organisations that use the web to share content or sell their products, is vulnerable.

But what exactly are “click frauds”? And what can be done to prevent them?

What is click fraud?

Click fraud occurs when someone creates a network of bots or sets up “farms” of human workers to generate clicks online. It can take many forms.

Fraudsters often use automated bots or click farms to generate fraudulent clicks on ads or likes on their own websites. They create websites and invite businesses to advertise on their site at a cost. If advertisers are paying per click, then the fraudster will earn money for their business (which is often a fake business) and divert traffic to their site.

Alternatively, a genuine business might create their own advertisements and place them on various websites. Cybercriminals might bombard these advertisements with clicks, which will be very costly for genuine businesses when they are paying per click.

The motivation here may be that the criminal has their own genuine business, and they are hoping the advertising cost will be so expensive it will put their competitor out of business.

A third method is that a criminal may create a fake website they hope users will click on.

This is because the site has a malicious link that will download malware onto a user’s computer, or because they hope to scam the user in another way (for example, by paying upfront fees for a service or items that do not exist).

By increasing traffic to their website, the website moves up in online search rankings. This impacts the general user who believes that because the site is high up in the order, it is a genuine and popular business they should trust.

Higher clicks can lead to higher trust

The psychological theory of planned behaviour provides some explanation for why people might trust a site that has numerous clicks and likes compared to a site that has few.

According to the theory, human behaviour is guided by three main factors: attitudes, subjective norms and perceived behavioural control.

Let’s consider each of these with respect to click fraud:

Attitudes: people often associate higher numbers of clicks, likes and traffic with credibility and trustworthiness. This is based on the belief that if many others engage with a site, it must be valuable, reputable or of high quality.

Subjective norms: subjective norms involve the perceived social pressure to perform or not perform a behaviour. If people see their peers, or society in general, trusting and using sites with many clicks and likes, they may feel pressured to trust these sites as well. This social influence can reinforce the behaviour of valuing and trusting high-traffic sites.

Perceived behavioural control: high traffic, clicks and likes can serve as indicators a site is reliable, reducing the perceived risk and effort required to evaluate it. When people perceive it is easier to trust a site with many popularity indicators, they are more likely to trust that site.

How can you prevent click fraud?

Ad fraud software is one method to prevent harm from click fraud.

Businesses can use specialised ad fraud detection and prevention tools, such as ClickCease, Fraudlogix or DoubleVerify. These tools can analyse click patterns, detect anomalies and block suspicious activity.

Businesses can also use IP blacklists to identify and block known fraudulent IP addresses. An IP – or “internet protocol” – address is a unique identifying number for any device connected to the internet.

Businesses can also employ geo-targeting to limit ad exposure to specific regions or locations, reducing the risk of fraudulent clicks from irrelevant or high-risk areas.

The general internet user can also be a part of the solution. We need to change our online shopping and trust behaviours. Some of the following checks will help users determine if a website or business is genuine:

  • verify the source. Is it credible and well-known?
  • hover over the URL. Is it a known web address? It may mimic one, so a close inspection is needed. For example, the legitimate website www.google.com might be www.go0gle.com
  • become more aware of click fraud. Knowing it is prolific and that you are most likely to encounter it in your everyday life will help you learn to spot it and avoid it.
  • use antivirus and anti-malware software protection to help protect you, identify malicious websites, and keep your software up to date. You cannot solely rely on this software to protect you, but it is an important part of the solution.

The Conversation

Monica Whitty receives funding from RCUK, ARC, Defence and Intelligence UK and Australia

ref. What are ‘click frauds’ – and how can we stop them? – https://theconversation.com/what-are-click-frauds-and-how-can-we-stop-them-237397

Married to the job? How having a self-employed partner might be hurting your happiness

Source: The Conversation (Au and NZ) – By Hassan Kalantari Daronkola, Senior lecturer, Swinburne University of Technology

Golubovy/Shutterstock

Ever considered working for yourself? Some of the oft-touted perks make it seem like a dream. You get more control over your time, total freedom over creative and business decisions, and a better work-life balance.

For many self-employed entrepreneurs, however, this promise proves a cruel mirage. Financial insecurity, unforeseen obstacles and having to work lonely late nights can all make the reality very different.

And although they might be running a business solo, entrepreneurs don’t get to exist in their own little bubbles. The pressures they face can put serious strain on all of their relationships.

Perhaps none so much as that with a spouse, who gets a front-row seat to all the ups and downs.

My recent research sought to examine what it’s like when a partner’s business becomes the other significant other.

What it found was troubling, but perhaps unsurprising – that having a self-employed partner can significantly reduce your life satisfaction, especially when family, leisure and work are your own key priorities.




Read more:
Having it all is a myth: family and personal commitments are pushing women out of their own businesses


An important contribution

The self-employed form a small but significant chunk of Australia’s total workforce – just under 16% in 2022. They also make an important economic contribution.

It’s important to note that self-employment isn’t always a choice. In challenging economic periods, the percentage of self-employed will often rise as people are “pushed” into starting their own businesses out of necessity.

gardener mowing lawn seen from above
Tough economic conditions can push people into working for themselves.
Virrage Images/Shutterstock

This phenomenon, also known as the “unemployment push” or “refugee effect”, suggests that people often turn to entrepreneurship when faced with limited job opportunities or a poor job market.

This kind of necessity-driven entrepreneurship can provide a crucial source of income for entrepreneurs. It can also generate new job opportunities for others, if these new businesses become successful enough to start hiring.

But it’s not easy, and can pose significant challenges for their spouses and other close family members. These should not be overlooked.

Partners bear the costs, too

My study examined data spanning more than 80,000 respondents and 60 countries from the latest World Values Survey, which is conducted every five years.

It found the spouses of self-employed individuals tend to have lower life satisfaction.

A range of factors could be contributing to this effect, from the heavy stress of financial uncertainty to difficulties disconnecting from work, which can strain personal relationships.

My research also found the perceived importance of family, leisure and work amplified this effect. The more important these aspects were to a spouse, the lower their life satisfaction was likely to be.

This is largely in line with what you’d expect. The demands and irregular hours associated with self-employment can lead to less family time, less time for shared leisure activities, and increased stress.

On top of this, ambitious, career-focused individuals might struggle to manage the additional responsibilities and stress that come with their partner’s self-employment, leading to lower life satisfaction.

Husband and wife using laptops, child using tablet
Juggling work with family responsibilities such as childcare can be extremely taxing.
Andrey_Popov/Shutterstock

The picture was even worse when both partners were self-employed – life satisfaction was significantly lower. This reflects some unique challenges that are different again to those of the other households.

Having just one self-employed partner can significantly disrupt the work-family balance. Now imagine both! It can quickly become extremely challenging to manage responsibilities like caring for children, let alone find time off to be together.

In Australia, where work-life balance is a deeply valued cultural norm, the strain of having a self-employed spouse can be particularly challenging.




Read more:
Life’s big moments can impact an entrepreneur’s success – but not always in the way you’d expect


What should be done?

The self-employed and their partners make a valuable contribution to Australia, so it’s important we look after them.

Our findings suggest we need to create better support systems for families where one or both partners are self-employed, particularly in economic downturns.

This could include mental health supports to deal with the stress of self-employment and financial planning services to assist in managing the ups and downs.

Policies designed to directly address the financial insecurity of self-employment could have a disproportionate impact. This could include new tax breaks specific to solo entrepreneurs.

Expanding access to affordable childcare could also make it easier for both partners to juggle their work and home responsibilities, especially when money is tight.

The benefits of working for yourself shouldn’t cost the wellbeing of those closest to you. By creating better support systems for self-employed families, we can slowly fix this equation.

The Conversation

Hassan Kalantari Daronkola does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Married to the job? How having a self-employed partner might be hurting your happiness – https://theconversation.com/married-to-the-job-how-having-a-self-employed-partner-might-be-hurting-your-happiness-236510

Happy Father’s Day, Daddy Pig – despite your faults, you’re TV’s greatest dad

Source: The Conversation (Au and NZ) – By Ben McCann, Associate Professor of French Studies, University of Adelaide

Peppa Pig/YouTube

The children’s show Peppa Pig, first screened in the United Kingdom in 2004, is now broadcast in more than 170 countries and has become a billion-dollar brand. Its smart three-act structure, told in five-minute episodes, has been used to teach creative writing and even to help us think philosophically.

Having watched Peppa Pig for 12 years with my own kids, I’m always drawn back to Daddy Pig – the cheerful, striving figure who is often considered “silly” by his children.

Daddy Pig is constantly being fat-shamed and ridiculed, yet he remains steadfast and hardworking. He is jovial, explains science to his family, (eventually) listens to his wife and children and, most importantly, never loses his patience.

This Father’s Day, I’d like to take this opportunity to recognise Daddy Pig for being a role model for dads all over the world.

A hapless dad?

Daddy is a classic example of the “hapless dad” trope commonly found in family-oriented films and TV shows. These father figures are typically portrayed as well-meaning, but clueless and inept when it comes to handling chores and responsibilities.

Hapless dads struggle to cook, clean or care for children, and rely on others (usually the mother) to bail them out. They have good intentions, but they’re bad at following through – and their efforts often backfire.

In the episode Pancakes, Daddy’s flipped pancake sticks to the ceiling. In Daddy Loses His Glasses, he realises he has been sitting on his glasses for the whole episode. Each episode invariably ends with everyone laughing at “silly Daddy”, including Daddy himself.

In my favourite episode, Daddy Puts Up A Picture, Daddy hammers a nail into a wall, with predictably unfortunate results. But he keeps calm. He asks Peppa and George to help him as he plasters and paints to repair the damage. He then bathes them and everything returns to normal.

It’s a great example of how to create tension in storytelling: will Daddy clean everything up before Mummy Pig gets home? It also teaches a valuable life lesson: don’t panic.

Daddy Pig isn’t hapless. He is a wonderful role model who always gives 100% to his work, exuding a warmth and stoicism that ennobles us.

Comic relief

Comic relief characters in children’s TV and literature personify cheerfulness and jokiness. Comedy seeks to minimise the anxieties felt by the reader or audience, by reinforcing the message that life is not to be taken too seriously.

As children’s literature expert Kerry Mallan noted in 1993, these characters have faults:

they may, for instance, be vain, lazy, frivolous, clumsy or naive but these faults are not fatal […] and the reader or audience is able to laugh at the comic character’s expense.

Daddy Pig declares himself “a bit of an expert” in several things, including map reading, kite flying and trumpet playing, but is usually proven clueless. He says he can speak French, but he can’t.

These bungling, clumsy attempts to exert his patriarchal authority gently poke fun at traditional gender stereotypes and portray Daddy as someone who is at ease with his own frailties.

Children will chuckle at slapstick situations such as Daddy getting stuck in cement, while adults will appreciate the more subtle humour such as how Daddy fixes the computer by turning it off and on again, or when he sends his family to sleep while reading them a book on concrete. This double play of humour links Daddy Pig back to the Shakespearean fool.

Yet, every once in a while, Daddy also gets to “win” an episode. In Long Train Journey, Daddy is invited to go overseas for work. He is treated like royalty, served coffee and orange juice in the buffet car (not even the king is afforded such luxury) and is finally recognised for his fame and expertise in all matters of concrete.

Importance of play

Researchers have noticed the importance of father–child play. Like Bandit from Bluey, Daddy’s play is often physical, spontaneous and playful.

In Daddy’s Birthday, he is the happiest when jumping in muddy puddles with Peppa and George. In Marble Run, he turns the whole house into a marble run course – and the children are delighted.

In Camping, Daddy shows Peppa and George how to light a campfire by rubbing two sticks together. He could just use the matches Mummy Pig offers, but he perseveres and eventually the fire is lit – and everyone cheers.

Daddy’s playful nature helps create a positive and enjoyable environment for his family. He is actively involved in their lives and is always there to give love and support during important moments.

Daddy Pig, we salute you

After nearly 400 episodes, Daddy Pig continues to embody the lovable yet imperfect patriarch, whose actions demonstrate the importance of family values, hard work and knowing when to quit. Richard Ridings, the British actor who has voiced the character since 2004, has often reiterated Daddy Pig’s resilience.

In Father’s Day, Peppa and George make Daddy a cake full of cereal, ketchup and blue cheese. Daddy’s response? “Tasty!”

Despite all the slings and arrows thrown his way, Daddy Pig embraces life, shakes off its frustrations and keeps his spirits up. What more could you ask for?

The Conversation

Ben McCann does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Happy Father’s Day, Daddy Pig – despite your faults, you’re TV’s greatest dad – https://theconversation.com/happy-fathers-day-daddy-pig-despite-your-faults-youre-tvs-greatest-dad-236698

Grattan on Friday: have we heard the CFMEU’s last hurrah or seen the start of its trench warfare?

Source: The Conversation (Au and NZ) – By Michelle Grattan, Professorial Fellow, University of Canberra

In one of those paradoxes of politics, a government that has delivered in spades to the union movement finds itself in a bare-knuckle fight with the country’s most militant industrial organisation.

As government-imposed protections for gig workers and employees’ “right to disconnect” took effect from Monday, thousands of CFMEU members gathered at noisy rallies in the capital cities the following day, with placards and speakers denouncing Labor and Prime Minister Anthony Albanese.

The CFMEU is raging about being routed by a government that had no option – after turning a blind eye for too long to known and suspected malfeasance – but to act strongly when the behaviour was documented in vivid and shocking detail in the media.

Initially, then-workplace relations minister Tony Burke sought to put the government at some distance from the operation by having the Fair Work Commission’s general manager (who is the regulator) seek court approval to put an administrator into the CFMEU’s construction division.

Burke backed this up with the threat of federal legislation if the CFMEU didn’t cooperate. The union resisted and the government, with Murray Watt now the minister, had to make good its threat.

By early last week, the legislation was through parliament; by week’s end an administrator was in place and nearly 300 union officials were out of their positions.

Three CFMEU appointees are also off the board of the $92 billion superannuation fund Cbus. Former Labor senator Doug Cameron tweeted in support of one of them, Dave Noonan, “Guilt by association and knee jerk retribution is unacceptable!”

One man left standing was CFMEU national secretary Zach Smith, who had unsuccessfully tried to have the matter dealt with internally. Smith told Tuesday’s rally in Canberra: “Administration will come and go, politicians will come and go, but this union will stand long after they’re gone”. Smith seems in a near-impossible position.

Meanwhile, the notorious John Setka, the CFMEU’s former Victorian secretary who had resigned when he knew what was about to come in Nine’s publications, appeared on Seven last Sunday claiming – wait for it – victim status.

Setka said he’d offered to quit in an attempt to head off intervention. In his version, after a discussion involving Burke, the CFMEU and the ACTU, word had come back that there was a “deal”. Unsurprisingly, the government denies this.

Whatever the nature of that alleged conversation, once Nine’s revelations appeared, the battlelines were drawn. The question now is, where ultimately will the cost-benefit ledger sit for the Albanese government?

As one Labor man put it, were Tuesday’s demonstrations a last hurrah from the CFMEU, or the beginning of trench warfare?

One obvious cost to Labor is a substantial monetary one. The CFMEU gave $1 million to the ALP’s last federal campaign. The party has now banned taking its money: given the proximity of the federal election, this will be a pinch.

Also, the Electrical Trades Union has announced it will withhold a $1 million donation to Labor because, it says, the CFMEU was not accorded “due process”. It flagged the money could be available for a legal challenge to the legislation.

Even more important for Labor is whether its action against the union will cost the party votes. Will some support leach to the Greens? Clearly the minor party thinks there are pickings here. Controversially, its high-profile housing spokesman Max Chandler-Mather was a prominent speaker at the Brisbane rally.

The Greens are positioning to capitalise on discontent with the Albanese government on the left, and among younger voters. They may well do so – we have previously seen “Greens creep”, to the point where the party has four members in the House of Representatives. But it is probably unlikely that whatever extra votes it might win will be much about the CFMEU issue.

Kos Samaras, from the RedBridge political consultancy, says the Greens’ progressive voters are “least likely to be supportive of unions”. The union brand is most popular with the working class constituency, especially the female union brand, he says.

That raises a relevant gender issue.

In recent decades, union membership has shrunk dramatically (to around 12.5% of the workforce in 2022), and become more feminised (11.4% for men and 13.6% for women). Both the ACTU president and its secretary are women – Michele O’Neil and Sally McManus.

The ACTU leadership has taken a strong stand against the CFMEU. Earlier contretemps involved Setka’s actions towards women – his disparaging of domestic violence campaigner Rosie Batty and his barrage of harassing texts sent to his wife.

The CFMEU may be winning support from the likes of the ETU, but it remains on the outer with the core of the union movement and union members generally. For many women unionists in particular, its face will look ugly.

Of course, being unpopular isn’t the same as being impotent. The union’s members are key to crucial infrastructure projects. Tuesday’s rallies took workers briefly away from their jobs. It’s possible the union could find ways to be more seriously industrially disruptive, although with officials sacked, to say nothing of the law, that could be difficult.

The CFMEU, which is in its present situation because some members have flouted the law, is now threatening to resort to the legal system, by challenging the government’s action in the High Court. A loss would be a disaster for the government, but it says it is confident it’s on strong legal grounds.

This is far from the first ALP government to confront a union. The Gillard government called out the Health Services Union; the Hawke government deregistered the BLF and brought in the RAAF as part of its assault on the pilots federation during the Ansett dispute of 1989. Prime Minister Ben Chifley sent in troops against the miners.

If all goes well for the government, its fight with the CFMEU could be a positive in the public’s mind (to the extent people think about it at all). It can argue it has done a huge amount in responding to the unions’ agenda, including facilitating multi-employer bargaining and advocating (and in some areas financing) pay rises for low income workers, while taking strong measures against rogue behaviour. Indeed it can paint the latter as its commitment to “law and order”, in the industrial world.

Michelle Grattan does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Grattan on Friday: have we heard the CFMEU’s last hurrah or seen the start of its trench warfare? – https://theconversation.com/grattan-on-friday-have-we-heard-the-cfmeus-last-hurrah-or-seen-the-start-of-its-trench-warfare-237751

‘Hot mic’ moment aside, the Albanese government’s Pacific policing deal is a masterstroke of diplomacy

Source: The Conversation (Au and NZ) – By Michael O’Keefe, Director, Master of International Relations, Department of Politics, Media and Philosophy, La Trobe University

Australian Prime Minister Anthony Albanese may be attempting to backpedal from a “hot mic” moment at the Pacific Islands Forum this week in which he joked the United States “go halvies” on a new regional policing agreement.

But putting aside any awkwardness, the deal itself represents a significant diplomatic victory for Australia, as well as a security win for the Pacific.

The geopolitical rivalry between China and Australia, the United States and their allies has been encroaching on all aspects of regional diplomacy, and Pacific leaders came into this meeting wanting to refocus the agenda.

And one of the most important issues to the Pacific is transnational crime. With drug cartels from Latin America using Fiji and other Pacific nations as a transit point for drugs entering Australia and New Zealand, transnational crime now sits alongside climate change as the top two regional priorities.

In January, three tonnes of methamphetamine were seized in Fiji. If delivered to markets in Australia and New Zealand, it could have been valued at hundreds of millions of dollars.

Asian crime syndicates and outlaw motorcycle gangs from Australia and New Zealand are also present in some countries, bringing other crimes, such as human trafficking, prostitution and scamming operations.

In June, Fijian Prime Minister Sitiveni Rabuka told Pacific leaders:

We know that crime and criminal groups do not respect borders. Rather, they manipulate borders with their business model. Cybercriminals ignore borders altogether.

What the new policing agreement will do

This is why this week’s headline announcement of a A$400 million Australian-funded Pacific Policing Initiative is so vital. It’s a comprehensive program designed by Pacific police to meet the increasing threat of transnational crime.

There are three main pillars to the agreement, which will establish:

  • four new policing centres providing specialist training across the region

  • a Pacific policing support group able to deploy trained officers to countries for major events or to respond to crises

  • a Pacific policing coordination hub in Brisbane that will have access to Australian Federal Police facilities for training.

Albanese has been keen to emphasise the idea was developed as a collaborative effort by Pacific police chiefs.

Unlike previous bilateral efforts involving Australia, this initiative will be truly regional. And despite some apprehensions about the geopolitical impact of the deal, the consensus among Pacific leaders is the initiative will be highly beneficial.

Papua New Guinea’s prime minister, James Marape, described it as “a concept that is born from within”.

The entire Pacific is the biggest unpoliced space in planet earth. […] it is really important that we come together in this manner.

Spiralling drug use and HIV infections

The threats from transnational criminals are framed as a problem thrust on the region from outside. These organised crime groups are only interested in the strategic value of the Pacific as a waypoint in their distribution networks.

These criminals are also taking advantage of gaps in the Pacific policing capacity and the vulnerability of regional police to corruption.

Unfortunately, the side effect of being a transshipment hub is rising drug use in many Pacific nations themselves, with associated social and health problems such as sex work and HIV infections.

The number of new HIV cases in Fiji, in particular, is surging at an alarming rate. As one UN official said:

It’s a serious concern, we are seeing young people, teenagers, dying of HIV today and that’s shocking. […] We are seeing 10-year-olds, 12-year-olds coming in to clinics testing positive because of drug use.




Read more:
Meth addiction, HIV and a struggling health system are causing a perfect storm in Fiji


The geopolitics behind the deal

Responding so comprehensively to this need will also ensure Australia is viewed as the “partner of choice” for at least a generation of Pacific police.

Many Pacific leaders feel Australia has struggled over the years to deliver a satisfactory response to their concerns over climate change. The policing initiative, however, is an example of Australia delivering on a promise. This will likely give Canberra a boost in its ongoing battle with China for influence.

The deal builds on Australia’s successful military diplomacy in the Pacific in recent years. Canberra has funded key defence infrastructure, such as the Lombrum and Blackrock bases in PNG and Fiji, respectively, and delivered military equipment, such as patrol boats and bushmaster vehicles.

These are practical examples of Canberra using the tools of statecraft at its disposal to achieve its national interests – namely crowding out
Chinese influence in this strategic area.

The policing agreement stands in sharp contrast to China’s failure to negotiate a regional security agreement of its own in 2022.

Of course, there is some wariness over the deal. Vanuatu Prime Minister Charlot Salwai said he wanted to ensure the policing initiative is “framed to fit our purposes and not developed to suit the geostrategic interests and geo-strategic denial security postures of our big partners”.

Under the agreement, each Pacific government can decide how it chooses to participate in the initiative. The response from the Solomon Islands, which has signed a controversial police deal with China, will now be watched closely in Canberra.

In short, the Pacific Policing Initiative is good public policy and diplomacy. It will certainly improve the fight against transitional crime by providing regional police with the resources and expertise they need.

Success on policing shouldn’t breed complacency, however. Australia has a long way to go to meet Pacific expectations on climate change. No doubt China will be searching to gain an advantage in this area.

The Conversation

Michael O’Keefe has received funding from the Australian Army Research Centre.

ref. ‘Hot mic’ moment aside, the Albanese government’s Pacific policing deal is a masterstroke of diplomacy – https://theconversation.com/hot-mic-moment-aside-the-albanese-governments-pacific-policing-deal-is-a-masterstroke-of-diplomacy-237663

Talk isn’t enough: Pacific nations say Australia must end new fossil fuel projects

Source: The Conversation (Au and NZ) – By Liam Moore, Lecturer in International Politics and Policy, James Cook University

Low-lying Tuvalu Romaine W/Shutterstock

This week, one of the world’s largest fossil fuel exporters went to a meeting of island states strongly affected by human-induced climate change.

Or, in more conventional language, Australian leaders attended the annual Pacific Islands Forum in Tonga.

Since 1971, this forum has been the top diplomatic meeting for Pacific nations, including Australia and New Zealand. Security was on the agenda this year, against a backdrop of geopolitical manoeuvring and unrest in New Caledonia. But one issue made its presence felt above all else: climate change.

At the forum’s opening, United Nations Secretary-General António Guterres made that clear:

There is an enormous injustice in relation to the Pacific and it’s the reason I am here […] The small islands don’t contribute to climate change but everything that happens because of climate change is multiplied here.

Australia is walking a difficult line at the summit. Pointing to our domestic green energy progress isn’t enough. Our neighbours are focused on Australia’s emergence as the world’s second largest exporter of fossil fuel emissions and steady opening of more gas and coal fields. Even as Australia’s climate and migration pact with Tuvalu came into effect, Tuvalu’s climate change minister, Maina Talia, called for an end to the “immoral and unacceptable” acts of opening new mines, continuing fossil fuel subsidies and exporting fossil fuels.

Australian leaders hope to co-host the world’s top climate talks in 2026 in partnership with Pacific Island nations. While some Pacific leaders are opposed to co-hosting without an Australian pledge to end new goal and gas projects, others see it as a way Australia can show it is truly part of the “Pacific family”.

What happened at the forum?

A big-ticket item at this year’s forum was the Falepili Union, a pact between Australia and Tuvalu signed last year and coming into effect at the forum. Minister for International Development and the Pacific, Pat Conroy, claimed it was the

most significant agreement between Australia and one of its Pacific partners since the agreements for Papua New Guinea’s independence in 1975.

The pact allows 280 Tuvaluans a year to move to Australia, whilst committing Australia to funding climate adaptation work and disaster response efforts on the islands. Significantly, the treaty also states Australia will recognise the statehood of Tuvalu — even if it were to be submerged due to climate change.

In return, Tuvalu and Australia will agree “together” on any arrangements involving Tuvalu’s security or defence. Effectively, this gives Australia the extraordinary ability to block any actions of Tuvalu it feels do not serve its regional interests. This is significant, as China seeks to expand its influence in the Pacific.

At the leaders forum on Thursday, the joint bid to host the 31st United Nations climate conference is expected to be discussed. It’s not guaranteed, as Türkiye has also put in a bid. Pacific leaders have made it clear they will push hard for Australia to go beyond efforts to cut local emissions.

What else might we see?

Analysts have been closely watching how New Zealand leaders approach the forum. While New Zealand has very strong connections to the Pacific and has been actively supporting climate adaptation work in many Pacific nations, the new right wing government is showing signs of backing away from domestic climate efforts.

At the forum, New Zealand’s Deputy Prime Minister and Foreign Minister, Winston Peters, drew attention for downplaying the human role in changing the climate and claiming some Pacific islands are actually growing.

Are island nations united? Not on everything. But on climate, they have learned the power of speaking with a united voice. In recent years, Pacific nations have become the new face of climate diplomacy. At the 2022 Sharm el-Sheikh climate talks in Egypt, Pacific nations were visible and effective in their push to secure better promises of funding to cover loss and damage done by climate change.

Pacific expert George Carter this week described the effective Pacific approach: inviting Australia to be more active as a member of the Pacific family while at the same time pressing us to cut reliance on fossil fuels.

Pacific leaders have consistently said they are willing to take their allegiances elsewhere if high-level rhetoric does not turn into action. In 2019, former Fijian Prime Minister Frank Bainimarama claimed climate reluctance by Australia’s Morrison government would push Pacific nations closer to China.

This is because adapting to sea level rise is expensive, and Pacific nations are small.

Vanuatu, for instance, was the first nation to figure out how much climate adaption would cost them. The answer: A$260 million by 2030 just to respond to loss and damage. To phase out fossil fuels and decarbonise the nation in addition to adaptation projects would cost $1.75 billion — a staggering amount for a small country.

Vanuatu is already the world’s most disaster-prone nation. Rising to the challenge of protecting shorelines and relocating villages comes on top of that.

Fiji has completed six climate-related community relocations to date. According to the government, 42 more need immediate help and another 800 will need assistance soon. Without external funding, the need will soon dwarf what the government can offer.

What’s next?

For the Pacific, climate change is everything. When Guterres talked about moving away from fossil fuels, many observers took that to be a comment aimed at Australia.

It’s unlikely Australia can keep the Pacific onside with bilateral pacts, regional policing initiatives or by pointing to domestic efforts to go green and achieve net-zero later. For the Pacific, the future is now. Climate change is lapping at their shores, and future promises are worth very little.

The Conversation

Liam Moore does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Talk isn’t enough: Pacific nations say Australia must end new fossil fuel projects – https://theconversation.com/talk-isnt-enough-pacific-nations-say-australia-must-end-new-fossil-fuel-projects-237749

New research busts the myth that crossbred ‘designer dogs’ are healthier than pedigrees

Source: The Conversation (Au and NZ) – By Mia Cobb, Research Fellow, Animal Welfare Science Centre, The University of Melbourne

Shutterstock

Labradoodles, puggles, dorgis, cavoodles, cavapoos: whatever you call them, there’s no escaping the explosion of designer crossbreeds parading along our streets and through our dog parks these days.

People have flocked to these hybrid dogs as the health problems associated with pedigree breeds became more widely known. As the theory goes, crossbreed designer dogs are more genetically diverse, so are less likely to suffer the health issues plaguing purebreds.

But are these designer mixes actually healthier than their purebred cousins? This was the question researchers from the United Kingdom’s Royal Veterinary College set out to answer in a new paper published overnight.

The study focused on three common poodle crossbreeds: pockapoos, labradoodles and cavapoos. It found they were no more or less healthy than their pure-breed counterparts. The researchers hope the findings will help dog owners make more informed, evidence-based decisions when selecting their next furry friend.

cavapoo puppy next to person
Are designer mixes actually healthier than their purebred cousins?
Shutterstock

Designer crosbreeds

Most dogs alive today were not bred under human control. Regardless, humans have created more than 400 modern dog breeds in around 200 years, each with their own looks and temperaments.

Some popular dog breeds, such as the golden retriever, have mixed-breed origin stories. However, many are “pedigree dogs” bred from a limited gene pool.

Advocates for purebred dogs say they have more predictable health, behaviour and appearance. And many pedigree registers no longer permit the inclusion of crossbreed dogs.

Over time, however, this lack of genetic diversity among purebreds has led to
extreme body types and serious welfare problems for many dogs.

To overcome these issues, some breeders have turned to “out-crossing”: deliberately mating two dogs from different breeds. The goal is to dilute inherited physical or behaviour problems, producing healthier puppies. The aspiration being that the offspring will prove more robust than their parents, also known as “hybrid vigour”.

This has led to a rise in “designer crossbreeds”. In particular, poodles have been crossed with other breeds, such as:

  • the cavalier King Charles spaniel-cross, known as the cavoodle in Australia and cavapoo in the United Kingdom

  • the cocker spaniel-cross, known as the spoodle in Australia and cockapoo in the UK

  • The labrador retriever-cross, known as the labradoodle. This mix was originally bred by an Australian, to create a non-allergenic guide dog.

small brown poodle on grass
The research involved poodles that have been crossed with other breeds.
Shutterstock

Oodles of health issues?

The research from the Royal Veterinary College involved a survey of about 9,400 people.

Some owned a cross-bred dog – either a cockapoo (spoodle), cavapoo (cavoodle) or labradoodle. Others owned one of their purebred “progenitor” or founder breeds – either a cavalier King Charles spaniel, cocker spaniel, labrador retriever or poodle. All dogs were aged under five years.

The authors tested the assumption that designer crossbreeds have less chance of suffering common disorders compared to their founder breeds.

They compared odds for the 57 most common health disorders across the three designer crossbreeds with each of their founding (progenitor) breeds. In all, 342 comparisons were made.

Common health issues included eye and ear infections, diarrhoea, and cruciate ligament rupture.

And the results? The poodle-cross dogs and comparable founder-breed dogs shared health outcomes 87% of the time.

Crossbreeds were more likely to experience a small number of disorders (7%). But they were less likely to experience a small number (6%) of other disorders.

Overall, there was no compelling evidence in these poodle crossbreeds of “hybrid vigour”. There was also no evidence purebreds were significantly healthier than the designer crossbreed dogs.

small white dog being trimmed
There was no evidence that purebreds were significantly healthier than the designer crosbreed dogs.
Shutterstock

What does this all mean?

The authors concluded that, given their results, prospective dog owners wondering which dog to buy should consider other factors such as breeding conditions, temperament and the health of a puppy’s parents.

The study focused only on young adult dogs. Crossbreeding may bring health benefits that don’t emerge until later in life. So a study that repeats these questions when the dogs are seniors would help us understand how designer crossbreeds age, and identify risk factors so we can help them age well.

Importantly, the study only looked at three types of crossbreeds, all involving poodles. Other designer crossbreeds may experience better health than their purebred cousins.

For example, flat-faced dogs such as pugs and French bulldogs are likely to experience breathlessness and skin and eye problems. Crossing these breeds with other dogs would reintroduce a proper muzzle to their face, bringing health and welfare advantages.

cockapoo puppy sleeping
Cross-breeding may bring health benefits that don’t emerge until later in life.
Shutterstock

Who could dogs be?

All this raises important questions. Where do the animals in our lives come from? How are they bred, and is this information transparent? Are we OK with current breeding practices? And if not, what must change?

It stands to reason that, when searching for the perfect canine companion, we want one that will be healthy, long-lived, and happy to live with us.

These attributes are good for the dog. They are also good for their people. A healthy dog means fewer vet bills. Longer-lived equals more time shared together, and living happily with us translates to less stress, and a better quality of life for everyone in the home.

So how do we find that dog?

Some European countries mandate that dogs must meet strict physical, genetic and behaviour requirements before being registered and used for breeding. This requires a nationally consistent licensing regime and well-resourced enforcement – both of which are lacking in Australia.

What ultimately controls if dogs are healthy, long-lived and happy is us. Breeders decide which dogs to mate. Dog lovers decide which puppy to buy. And when we vote, we help decide how governments regulate the breeding industry.

For the sake of our canine friends, I hope we choose well.

The Conversation

Mia Cobb does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. New research busts the myth that crossbred ‘designer dogs’ are healthier than pedigrees – https://theconversation.com/new-research-busts-the-myth-that-crossbred-designer-dogs-are-healthier-than-pedigrees-237648

Wondering what to make of warnings about our electricity system? The outlook is improving – but we’re not out of the woods

Source: The Conversation (Au and NZ) – By Alison Reeve, Deputy Program Director, Energy and Climate Change, Grattan Institute

Shutterstock

Every year, authorities release a snapshot of how reliable our electricity supply will be in the coming decade. And each time, commentators have divergent takes on what it all means.

So it is with the latest reliability snapshot released by the Australian Energy Market Operator (AEMO) on Thursday. Essentially, the report says the national electricity grid – which serves the five eastern states and the ACT – is in a better place than last year. But we’re not out of the woods.

Media coverage interpreted the findings in vastly different ways. Some claimed it was good news for future energy reliability. Others suggested the Albanese government’s renewables strategy had created the risk of power shortages for years to come.

So let’s take a closer look at how the forecast should be understood, and what it means for Australian electricity users.

What has changed since last year?

AEMO manages the nation’s electricity and gas systems and markets. Its annual outlook is known formally as an “electricity statement of opportunities”.

AEMO looks at what’s in the investment pipeline for the next decade, in terms of electricity generation, transmission and storage. It then tests if this combination of assets is able to maintain the reliability of the grid. A potential shortfall is a warning that, without further investment, homes and businesses could suffer electricity shortages.

Last year’s forecast warned of a need for more investment, particularly for transmission lines, to deliver a reliable electricity supply. So what’s changed this time around?

AEMO says the outlook for energy reliability has improved. It pointed to progress on an extra 5.7 gigawatts (GW) of new generation and storage developments since last year. These include:

  • 3.9GW of battery storage
  • 1.2GW of large-scale solar
  • about 400 megawatts (MW) of wind power
  • 365 kilometres of transmission connections.

The improved forecast also takes account of a two-year extension in the life of the Eraring coal plant in New South Wales and the ongoing rapid increase in rooftop solar capacity. Other projects making progress include a 750MW gas plant in NSW’s Hunter Valley and pumped hydro storage including Snowy 2.0.

In 2023, investment in new large-scale renewable energy slowed, though investment in rooftop solar and large and small batteries remained strong. The government responded by expanding its underwriting program to support large-scale generation projects. This program makes it easier for project proponents to secure financing, by topping up future revenues if they fall below an agreed level.

There’s more good news. The 12GW electricity generation capacity approved last financial year is nearly double the 6.9GW approved the year before.

It’s also worth noting how far Australia has already come in its transition to renewable energy. We’re fast approaching the halfway mark, averaging about 40% renewable generation. Some days, renewables can meet 100% of the demand for electricity.

In 2000, renewables’ share was only 2%. We have seen a huge transformation in just 24 years.

But what could go wrong?

Australia is still heavily reliant on coal-fired power plants, some of which are fast approaching retirement. The next big one due to close is Eraring, the country’s largest, in 2027. Yallourn in Victoria and Callide B in Queensland are due to close in 2028.

The latest forecast assumes the schedule for closures doesn’t change. By 2035, though, AEMO expects 90% of coal capacity to have closed, reducing it from the current 21GW to 1.4GW.

The grid is also facing a rapid rise in electricity consumption in the next decade and beyond. This is a result of the electrification of transport, industry and households. So new generation and transmission must be built to meet this new demand, as well as to replace ageing coal.

AEMO also tests the impacts of all these developments and the inherent uncertainty of events. It does this by modelling project delays and cancellations, power station shutdowns and closures, and changes in demand.

The results of this modelling are presented in its forecasts, according to different scenarios. Often, media outlets pick up on either the most positive or negative of these scenarios, leading to the divergent headlines we’ve seen today.

Insurance against black-outs

AEMO is taking out a form of insurance against outages this summer by activating the Reliability and Emergency Reserve Trader (or RERT) mechanism. AEMO will call for tenders for large electricity users, such as aluminium smelters, to agree to power down when the system is under strain, in return for payments. In addition, owners of back-up generators could be paid to turn them on to feed power into the grid if energy demand looks like it might exceed supply.

AEMO has also asked electricity retailers to ensure they have contracts in place for enough supply to meet a one-in-two-year level of peak demand.

Tools like these have been used a lot more often in recent years as the chart below shows.

One chart showing increasing instances of money being paid out for the reliability and reserve trader mechanism, and one showing increasing instances of the mechanism being activated.
The Reliability and Reserve Trader Mechanism has been used much more often in recent years.
Grattan Insitute analysis, using data from AEMC, AEMO and ABS

This suggests the system has been under more stress. It points to the need, as AEMO signalled in last year’s statement, to increase investment in the system.

What does this mean for households?

The statement’s main scenario, the one considered most likely by AEMO, suggests Australia is largely on track for maintaining a stable electricity supply. That’s provided the current pipeline of investment delivers on time and generators aren’t retired early.

The system operates to a very high reliability standard of no more than 10.5 minutes’ interruption to supply across the whole system for the year. The vast majority of outages (97%) are caused by network failures – storms, wind, traffic accidents – rather than lack of generation.

For Australians connected to the national grid, this means it’s still very unlikely their lights will go out in a widespread and prolonged blackout.

The Conversation

Since 2008, Grattan Institute has been supported in its work by government, corporations, and philanthropic gifts. A full list of supporters is published at www.grattan.edu.au.

Alison Reeve does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article. In addition to her role at Grattan Institute she is a Visiting Fellow at the Australian National University’s Institute for Climate, Energy and Disaster Solutions. .

ref. Wondering what to make of warnings about our electricity system? The outlook is improving – but we’re not out of the woods – https://theconversation.com/wondering-what-to-make-of-warnings-about-our-electricity-system-the-outlook-is-improving-but-were-not-out-of-the-woods-237750

Australia’s approach to international student caps is even more radical than in the UK and Canada

Source: The Conversation (Au and NZ) – By Gwilym Croucher, Associate Professor, Melbourne Centre for the Study of Higher Education, The University of Melbourne

Taoty/Shutterstock, CC BY

This week, Education Minister Jason Clare made an announcement that could reshape the landscape of international education in Australia.

He revealed how from 2025, Australian universities, TAFEs and vocational colleges will have caps on the number of international students they can enrol.

The approach is highly complicated. It involves some groups of students and excludes others, and uses formulas that apply differently to different institutions.

It will take some time for each institution to understand what this means for them and for sector-wide effects to kick in. Many details are also not yet public.

However, it is already clear Australia has taken a highly bureaucratic approach.

Our comparison with similar recent moves in the United Kingdom and Canada suggests it could set a new benchmark in government micromanagement of international education.

International parallels

For decades, Australia, the UK and Canada sought to attract international students. This included national branding campaigns and visa conditions allowing graduates post-study work rights. It also involved migration rules favouring graduates with certain types of skills.

Until recently, all three countries managed international education in two main ways. First, through quality assurance systems focused on the education international students receive. Second, through visa systems focusing on which students can enter the country, how much they can work and how long they can stay.

This approach worked well, with each country experiencing significant growth in international student numbers. In Australia, the number of international students has grown on average around 5% per year since 2005.

But when international student numbers grew very quickly after borders reopened post-pandemic, all three governments became concerned. They sought new ways to manage the influx of new students.

While many within the education sector argued the surge in new students was a short-term feature of post-COVID recovery, it proved very easy for others to portray the situation as immigration “out of control”.

Young people work on computers in small clusters of desks in a large lobby. There is a high ceiling with lights and a wide staircase.
Until recently, Australia, the UK and Canada have been trying to attract international students.
Nils Versemann/ Shutterstock, CC BY

What happened in Canada?

After the pandemic, the number of international students in Canada grew by around 30% per year for two years in a row. By 2023 there were more than one million international students in the country, compared with around 600,000 two years earlier.

In response, the Canadian government announced it would cap the number of study permits, to reduce the number of new international students in vocational and undergraduate programs by 35% in 2024.

Each province and territory has been given a cap based on its overall population. This will have a significant impact on urban metropolitan areas where international students prefer to study, notably the Greater Toronto Area, but will have less effect on other regions.

What about the UK?

The number of international students in the UK has also surged, reaching a historic high last year of more than 750,000. This growth was entirely driven by an increase in students from non-European Union countries, as the number of students coming from the EU declined by 8%.

In response, the UK government stopped allowing international students to bring their partners and children with them.

This has already had an impact, with a 16% decline in student visa applications in the year to July 2024.

Rows of people in seats listen to a speaker, who is standing in front of a whiteboard, next to a speaker.
The UK no longer lets international students bring partners and children.
Matej Kastelic/Shutterstock, CC BY

What’s going on in Australia?

Initially, through the now-infamous Ministerial Direction 107 (signed in December 2023), the Australian government tried to reduce the surge in new students by denying large numbers of student visa applications.

The Department of Home Affairs’ approach disproportionately affected students from India and low-income countries, while having little impact on students from China. The approach also disproportionately hit universities outside big cities and those with fewer international students.

Unfortunately, this completely undermined the Department of Education’s long-term strategy, which has been focused on increasing the diversity of the student population and the diversity of providers.

A new approach in Australia

So now the Albanese government is trying again. This time, each institution will be allocated a quota of new international students for 2025.

Australia’s largest universities, which also have high proportions of international students and are the most research-focused, will see the biggest cuts.

Many of these will have caps on new students set halfway between their 2019 and 2023 commencing numbers. Universities with the smallest proportions of international students will have their caps set at 2023 numbers. Private tertiary providers look like they will have significant cuts too.

The overall result will mean international students will find it more difficult to study at the large and high-ranked universities in Sydney and Melbourne. There will also be far fewer places in private colleges for lower-cost vocational programs.

The winners are public universities and TAFEs that currently enrol fewer international students.

What now?

What happens beyond 2025 is anyone’s guess, and will be determined through negotiations between the yet-to-be-established Australian Tertiary Education Commission and each provider.

What is clear is Australia is taking an even more extreme approach to managing international student enrolments than two of our major competitors.

The Conversation

The authors do not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and have disclosed no relevant affiliations beyond their academic appointment.

ref. Australia’s approach to international student caps is even more radical than in the UK and Canada – https://theconversation.com/australias-approach-to-international-student-caps-is-even-more-radical-than-in-the-uk-and-canada-237752

Romance fraud doesn’t only happen online – it can turn into real-world deception

Source: The Conversation (Au and NZ) – By Cassandra Cross, Associate Dean (Learning & Teaching) Faculty of Creative Industries, Education and Social Justice, Queensland University of Technology

Napoleonka/Shutterstock

We often think of fraudsters as people on the opposite side of the world. They will manipulate and exploit victims through words on a computer screen, or loving messages through the phone. But romance fraud can also happen in person, with the fraudster sleeping in the bed beside you.

This was the circumstance Australian writer Stephanie Wood found herself in. It’s also the basis for the new television series Fake, currently screening on Paramount+. A dramatisation of Wood’s powerful memoir by the same name, the series outlines the many lies and betrayals of an intimate relationship.

It’s a brutal insight into the world of deception which characterises romance fraud.

When love hurts

Romance fraud (or romance scams) is what it sounds like – offenders use the guise of a relationship to gain a financial reward. In most cases, it’s through the direct transfer of money from the victim, but it can also be through using personal credentials to commit identity crimes.

From the outside, it’s hard to understand how romance fraud is so effective. However, research has documented the range of grooming techniques, social engineering tactics and methods of psychological abuse deployed by offenders. Offenders know exactly what to do and say to gain the compliance of their victim.



Offenders target a person’s vulnerability and work hard to build strong levels of trust. There are endless calls, texts and emails that create a bond. Then follows the inevitable “crisis”, whereby the offender needs money urgently for a health emergency, criminal justice situation, business need or even a cryptocurrency investment opportunity.

For many, this can result in ongoing payments and substantial losses. Over A$200 million was reported lost by Australians to this fraud type in 2023, but this is likely a gross underestimation of actual figures. It also doesn’t capture the many non-financial harms, including physical and emotional declines in wellbeing.

When the relationship finally ends, it’s too late. The money is gone, the extent of the deception is laid bare, and recovery from the heartache and loss is a constant battle.

There is a well-documented “double hit” of victimisation, with individuals needing to grieve the relationship as well as any financial losses.

Seeing is not believing

There are countless incidents of romance fraud where the offender and victim never meet: the deception takes place entirely online. But it’s important to know fraudsters also operate in person.

Wood’s memoir details an extraordinary level of lies and dishonesty presented to her throughout her relationship. Stories that laid the groundwork for later fabrications. Stories that were deliberate and calculated in how they were used to gain her trust, and later used against her.

The motivations of these real-world deceivers are not always straightforward. Often it’s about money, but not always. For Wood, not being asked for money allayed potential suspicions, but it didn’t reduce her feelings of loss and emotional devastation upon discovering the extent of the lies.

Wood is by no means alone in her experience. Marketing executive Tracy Hall endured a similarly sophisticated and all-encompassing level of deceit in her relationship with convicted conman Hamish McLaren (known to her as Max Tavita).

In her book, The Last Victim, Hall recounts snippets of their daily lives over a 16-month period, with McLaren portraying himself as a successful professional in finance. His mail was addressed to Max Tavita and his phone conversations were with real people. Yet his whole identity and the world he represented to Hall was a complete fabrication.

The experiences of Wood and Hall highlight the sheer depth of elaborate deception that can be perpetrated in an intimate relationship. Critically, it highlights romance fraud isn’t relegated to an online environment.

How can we prevent romance fraud?

There is an overwhelming amount of shame and stigma associated with romance fraud. The dynamics of these deceptive relationships are misunderstood, and this perpetuates negative stereotypes and a discourse of victim blaming, even from friends and family.

In hindsight, the warning signs might seem obvious, but fraudsters tend to effectively disguise these in real time and deploy deliberate tactics to overcome any suspicion.

We must all create a culture that empowers victims to come forward to raise awareness. This isn’t intended to create fear or anxiety, but to normalise the threat fraud poses, and to allow for difficult conversations if it happens. Ongoing silence from victims only favours the offender.

How to protect yourself from romance fraud

It’s inevitable we’ll continue to swipe right in our efforts to find love. But keep a healthy level of scepticism and an open dialogue with family and friends in any quest for a new relationship.

Don’t be afraid to conduct your own searches of people, places and situations presented to you in a relationship. There is a memorable moment in Fake where the protagonist refutes her friend’s offer of assistance, saying “this is a love story not an investigation”. Sadly, sometimes an investigation is necessary.

No matter what the circumstance or the person, think carefully before sending any money. Only give what you are willing to lose.

Deception comes in many forms. We must recognise it for what it is, and the impact it has on victims. But we must also not give into those who lie, and let them define who we are or dictate our ability to trust.

If you or someone you know has been a victim of romance fraud, you can report it to ReportCyber. For support, contact iDcare. For prevention advice, consult Scamwatch.

The Conversation

Cassandra Cross has previously received funding from the Australian Institute of Criminology and the Cybersecurity Cooperative Research Centre.

ref. Romance fraud doesn’t only happen online – it can turn into real-world deception – https://theconversation.com/romance-fraud-doesnt-only-happen-online-it-can-turn-into-real-world-deception-237653

‘Hot mic’ moment aside, Pacific policing deal is a masterstroke of diplomacy for the Albanese government

Source: The Conversation (Au and NZ) – By Michael O’Keefe, Director, Master of International Relations, Department of Politics, Media and Philosophy, La Trobe University

Australian Prime Minister Anthony Albanese may be attempting to backpedal from a “hot mic” moment at the Pacific Islands Forum this week in which he joked the United States “go halvies” on a new regional policing agreement.

But putting aside any awkwardness, the deal itself represents a significant diplomatic victory for Australia, as well as a security win for the Pacific.

The geopolitical rivalry between China and Australia, the United States and their allies has been encroaching on all aspects of regional diplomacy, and Pacific leaders came into this meeting wanting to refocus the agenda.

And one of the most important issues to the Pacific is transnational crime. With drug cartels from Latin America using Fiji and other Pacific nations as a transit point for drugs entering Australia and New Zealand, transnational crime now sits alongside climate change as the top two regional priorities.

In January, three tonnes of methamphetamine were seized in Fiji. If delivered to markets in Australia and New Zealand, it could have been valued at hundreds of millions of dollars.

Asian crime syndicates and outlaw motorcycle gangs from Australia and New Zealand are also present in some countries, bringing other crimes, such as human trafficking, prostitution and scamming operations.

In June, Fijian Prime Minister Sitiveni Rabuka told Pacific leaders:

We know that crime and criminal groups do not respect borders. Rather, they manipulate borders with their business model. Cybercriminals ignore borders altogether.

What the new policing agreement will do

This is why this week’s headline announcement of a A$400 million Australian-funded Pacific Policing Initiative is so vital. It’s a comprehensive program designed by Pacific police to meet the increasing threat of transnational crime.

There are three main pillars to the agreement, which will establish:

  • four new policing centres providing specialist training across the region

  • a Pacific policing support group able to deploy trained officers to countries for major events or to respond to crises

  • a Pacific policing coordination hub in Brisbane that will have access to Australian Federal Police facilities for training.

Albanese has been keen to emphasise the idea was developed as a collaborative effort by Pacific police chiefs.

Unlike previous bilateral efforts involving Australia, this initiative will be truly regional. And despite some apprehensions about the geopolitical impact of the deal, the consensus among Pacific leaders is the initiative will be highly beneficial.

Papua New Guinea’s prime minister, James Marape, described it as “a concept that is born from within”.

The entire Pacific is the biggest unpoliced space in planet earth. […] it is really important that we come together in this manner.

Spiralling drug use and HIV infections

The threats from transnational criminals are framed as a problem thrust on the region from outside. These organised crime groups are only interested in the strategic value of the Pacific as a waypoint in their distribution networks.

These criminals are also taking advantage of gaps in the Pacific policing capacity and the vulnerability of regional police to corruption.

Unfortunately, the side effect of being a transshipment hub is rising drug use in many Pacific nations themselves, with associated social and health problems such as sex work and HIV infections.

The number of new HIV cases in Fiji, in particular, is surging at an alarming rate. As one UN official said:

It’s a serious concern, we are seeing young people, teenagers, dying of HIV today and that’s shocking. […] We are seeing 10-year-olds, 12-year-olds coming in to clinics testing positive because of drug use.




Read more:
Meth addiction, HIV and a struggling health system are causing a perfect storm in Fiji


The geopolitics behind the deal

Responding so comprehensively to this need will also ensure Australia is viewed as the “partner of choice” for at least a generation of Pacific police.

Many Pacific leaders feel Australia has struggled over the years to deliver a satisfactory response to their concerns over climate change. The policing initiative, however, is an example of Australia delivering on a promise. This will likely give Canberra a boost in its ongoing battle with China for influence.

The deal builds on Australia’s successful military diplomacy in the Pacific in recent years. Canberra has funded key defence infrastructure, such as the Lombrum and Blackrock bases in PNG and Fiji, respectively, and delivered military equipment, such as patrol boats and bushmaster vehicles.

These are practical examples of Canberra using the tools of statecraft at its disposal to achieve its national interests – namely crowding out
Chinese influence in this strategic area.

The policing agreement stands in sharp contrast to China’s failure to negotiate a regional security agreement of its own in 2022.

Of course, there is some wariness over the deal. Vanuatu Prime Minister Charlot Salwai said he wanted to ensure the policing initiative is “framed to fit our purposes and not developed to suit the geostrategic interests and geo-strategic denial security postures of our big partners”.

Under the agreement, each Pacific government can decide how it chooses to participate in the initiative. The response from the Solomon Islands, which has signed a controversial police deal with China, will now be watched closely in Canberra.

In short, the Pacific Policing Initiative is good public policy and diplomacy. It will certainly improve the fight against transitional crime by providing regional police with the resources and expertise they need.

Success on policing shouldn’t breed complacency, however. Australia has a long way to go to meet Pacific expectations on climate change. No doubt China will be searching to gain an advantage in this area.

The Conversation

Michael O’Keefe has received funding from the Australian Army Research Centre.

ref. ‘Hot mic’ moment aside, Pacific policing deal is a masterstroke of diplomacy for the Albanese government – https://theconversation.com/hot-mic-moment-aside-pacific-policing-deal-is-a-masterstroke-of-diplomacy-for-the-albanese-government-237663

Concussion risks for women footballers are greater than men: why, and what can be done?

Source: The Conversation (Au and NZ) – By Hunter Bennett, Lecturer in Exercise Science, University of South Australia

Since the inception of the Australian Football League Women’s (AFLW) competition in 2017, women’s football participation has increased rapidly, from about 380,000 in 2016 to around 600,000 in 2022.

Women now represent approximately one-third of all players nationally.

During this time, the AFLW has evolved dramatically.

In 2017, it started with eight teams playing a short eight-round competition. Next season, which begins on Friday night, 18 teams will play across a 15-round campaign.

By 2026, the competition will feature a full 17-round season, with female AFLW players becoming full-time athletes like the men.

The impact of injuries

Team success and career longevity rely heavily on one critical factor – staying healthy.

Teams with lots of injuries don’t win many games, and injured players often have shorter careers.

This is why injury prevention is one of the most heavily researched topics around the globe.

The first step in any good injury prevention plan is injury surveillance.

Injury surveillance is the process of observing and tracking injuries to identify which are most common and result in the most missed matches.

By identifying the areas of greatest need, targeted injury prevention strategies can be created.

There is a large body of research examining the most common injuries in male Australian football at all levels (including community, sub-elite and elite).

This research is often used to guide injury prevention strategies for women’s football.

However, this has an issue – we don’t know if women have the same injury patterns as men.

This is important when we consider there are key differences between how men’s and women’s Australian football is played.

At some levels (such as elite and sub-elite), woman’s football is currently played with 16 players on the field, rather than 18.

It has a shorter game duration and fewer player rotations than the men’s competition, which can affect the speed of the game and the fatigue players experience.

Finally, stoppages occur 30% more often in women’s football, and women’s teams have more than twice as many contested possessions and tackles per minute of match-play than men, highlighting it has more frequent player-to-player contact.

Key differences between men and women

Researchers from the University of South Australia recently conducted the largest league-wide study of the injury patterns of sub-elite women’s football to date, tracking the injures experienced by seven clubs competing in the South Australian National Football League Women’s competition during the 2023 season.

Ankle sprains, concussions and anterior cruciate ligament (ACL) injuries were the most common and burdensome. Conversely, there were very few muscle strains.

Most injuries occurred during matches (rather than at training), and more than two-thirds occurred in a contact situation (such as during a tackle or a marking contest).

Importantly, these injury patterns were notably different from those often seen in males.

First, hamstring muscle strains were one of the least common injuries, despite being one of the most common in men.

Second, ACL injuries occurred about twice as often in women than men.

Finally, and arguably most notably, concussion rates were about three-times higher than men – something that has been seen in prior seasons at the elite AFLW level.

Similar observations have been made in other contact sports such as rugby, where women not only experience higher rates of concussion, but also get concussed via different mechanisms to men.

Not only does this suggest women require different injury prevention strategies than men, but that concussion injuries should be a key prevention focus for all competition levels.

Football codes are becoming more knowledgeable about concussion.

What could be done to fix the issue?

There are some possible concussion prevention strategies that could be considered for women footballers.

Tackles with an upright body position have been shown to increase the likelihood of the tackler’s head contacting their opponent’s shoulder, which increases concussion risk.

So specific tackle skill training to ensure athletes keep a low body position and contact the opposition’s mid-section could be an option to help reduce the rate of tackle-related concussion.

Recent research has indicated neck strength might protect against concussions and that injury prevention programs that include neck exercises can reduce the number of head and neck injuries.

As such, exercises to improve neck strength could be a great introduction to pre-season training, in conjunction with normal upper and lower body strength training.

Similarly, a study of athletes from a range of sports (including soccer and volleyball) suggested improving core muscle strength and stability may reduce the risk of concussion, which could be trained easily throughout the entire season.

Finally, rule changes could reduce the opportunity for contact concussions to occur. Some common suggestions have included banning “the bump” to reduce shoulder to head contact, and limiting the number of players allowed on one side of the field during a kick in after a point is scored to reduce congestion.

The Conversation

The authors do not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and have disclosed no relevant affiliations beyond their academic appointment.

ref. Concussion risks for women footballers are greater than men: why, and what can be done? – https://theconversation.com/concussion-risks-for-women-footballers-are-greater-than-men-why-and-what-can-be-done-235090

Is chocolate milk a good recovery drink after a workout? A dietitian reviews the evidence

Source: The Conversation (Au and NZ) – By Evangeline Mantzioris, Program Director of Nutrition and Food Sciences, Accredited Practising Dietitian, University of South Australia

eldar nurkovic/Shutterstock

Whether you enjoy chocolate milk regularly, as a weekend treat, or as an occasional dose of childhood nostalgia, it probably wouldn’t be the first option you think of for post-workout recovery.

Unless you’re on TikTok, perhaps. According to many people on the social media platform, chocolate milk is not only delicious, but it offers benefits comparable to sports drinks after a workout.

So is there any evidence to support this? Let’s take a look.

Rehydrating after a workout is important

Water accounts for somewhere between 50% and 60% of our body weight. Water has many important functions in the body, including helping to keep our body at the right temperature through sweating.

We lose water naturally from our bodies when we sweat, as well as through our breathing and when we go to the toilet. So it’s important to stay hydrated to replenish the water we lose.

When we don’t, we become dehydrated, which can put a strain on our bodies. Signs and symptoms of dehydration can range from thirst and dizziness to low blood pressure and confusion.

Athletes, because of their higher levels of exertion, lose more water through sweating and from respiration (when their breathing rate gets faster). If they’re training or competing in hot or humid environments they will sweat even more.

Dehydration impacts athletes’ performance and like for all of us, can affect their health.

So finding ways to ensure athletes rehydrate quickly during and after they train or compete is important. Fortunately, sports scientists and dietitians have done research looking at the composition of different fluids to understand which ones rehydrate athletes most effectively.

The beverage hydration index

The best hydrating drinks are those the body retains the most of once they’ve been consumed. By doing studies where they give people different drinks in standardised conditions, scientists have been able to determine how various options stack up.

To this end, they’ve developed something called the beverage hydration index, which measures to what degree different fluids hydrate a person compared to still water.

According to this index beverages with similar fluid retention to still water include sparkling water, sports drinks, cola, diet cola, tea, coffee, and beer below 4% alcohol. That said, alcohol is probably best avoided when recovering from exercise.

Beverages with superior fluid retention to still water include milk (both full-fat and skim), soy milk, orange juice and oral rehydration solutions.

This body of research indicates that when it comes to rehydration after exercise, unflavoured milk (full fat, skim or soy) is better than sports drinks.

But what about chocolate milk?

A small study looked at the effects of chocolate milk compared to plain milk on rehydration and exercise performance in futsal players (futsal is similar to soccer but played on a court indoors). The researchers found no difference in rehydration between the two. There’s no other published research to my knowledge looking at how chocolate milk compares to regular milk for rehydration during or after exercise.

But rehydration isn’t the only thing athletes look for in sports drinks. In the same study, drinking chocolate milk after play (referred to as the recovery period) increased the time it took for the futsal players to become exhausted in further exercise (a shuttle run test) four hours later.

This was also shown in a review of several clinical trials. The analysis found that, compared to different placebos (such as water) or other drinks containing fat, protein and carbohydrates, chocolate milk lengthened the time to exhaustion during exercise.

What’s in chocolate milk?

Milk contains protein, carbohydrates and electrolytes, each of which can affect hydration, performance, or both.

Protein is important for building muscle, which is beneficial for performance. The electrolytes in milk (including sodium and potassium) help to replace electrolytes lost through sweating, so can also be good for performance, and aid hydration.

Compared to regular milk, chocolate milk contains added sugar. This provides extra carbohydrates, which are likewise beneficial for performance. Carbohydrates provide an immediate source of energy for athletes’ working muscles, where they’re stored as glycogen. This might contribute to the edge chocolate milk appears to have over plain milk in terms of athletic endurance.

A birds-eye view of a glass of chocolate milk with a red straw.
The added sugar in chocolate milk provides extra carbohydrates.
Brent Hofacker/Shutterstock

Coffee-flavoured milk has an additional advantage. It contains caffeine, which can improve athletic performance by reducing the perceived effort that goes into exercise.

One study showed that a frappe-type drink prepared with filtered coffee, skim milk and sugar led to better muscle glycogen levels after exercise compared to plain milk with an equivalent amount of sugar added.

So what’s the verdict?

Evidence shows chocolate milk can rehydrate better than water or sports drinks after exercise. But there isn’t evidence to suggest it can rehydrate better than plain milk. Chocolate milk does appear to improve athletic endurance compared to plain milk though.

Ultimately, the best drink for athletes to consume to rehydrate is the one they’re most likely to drink.

While many TikTok trends are not based on evidence, it seems chocolate milk could actually be a good option for recovery from exercise. And it will be cheaper than specialised sports nutrition products. You can buy different brands from the supermarket or make your own at home with a drinking chocolate powder.

This doesn’t mean everyone should look to chocolate milk when they’re feeling thirsty. Chocolate milk does have more calories than plain milk and many other drinks because of the added sugar. For most of us, chocolate milk may be best enjoyed as an occasional treat.

The Conversation

Evangeline Mantzioris is affiliated with Alliance for Research in Nutrition, Exercise and Activity (ARENA) at the University of South Australia. Evangeline Mantzioris has received funding from the National Health and Medical Research Council, and has been appointed to the National Health and Medical Research Council Dietary Guideline Expert Committee.

ref. Is chocolate milk a good recovery drink after a workout? A dietitian reviews the evidence – https://theconversation.com/is-chocolate-milk-a-good-recovery-drink-after-a-workout-a-dietitian-reviews-the-evidence-236685

LGBTQI+ Australians are tired of being ignored. Here’s why counting them in the census is so important

Source: The Conversation (Au and NZ) – By Xavier J Mills, PhD Candidate at School of Social Sciences, Media, Film and Education, Swinburne University of Technology

The 2026 Census presented a crucial opportunity to count the LGBTQI+ population in Australia for the first time.

Instead, the Albanese government has opted to disregard important questions on gender and sexual identity. Once again, LGBTQI+ Australians will be invisible in population data, sparking outrage in the community.

Serious concerns were raised about the 2021 Census and its failure to ask questions about sexual orientation and gender identity. This included complaints to the Australian Human Rights Commission on the basis that the survey failed “to ask meaningful questions to properly count members of the LGBTIQA+ community”.

Following the backlash at the time, the Labor government pledged to gather relevant data in the upcoming 2026 Census. Yet, this has been abandoned. The Sex Discrimination Commissioner has now called for the government to reverse the call.

This decision has huge implications for public policy, but also leaves LGBTQI+ people feeling unheard and unseen.

Previous question problems

In 2021, the census limited the ability for LGBTQI+ people to be counted and considered. This included in data collection, analysis and distribution of the findings.

For example, despite giving respondents the option to select “non-binary sex”, the Australian Bureau of Statistics (ABS) abandoned these data. They said “the sex question did not yield meaningful data”.

This seemingly “garbage data” was inevitable because the term “non-binary” is far more commonly associated with gender identity, rather than sex, leading many to be unsure exactly what was being asked.

For the 43,220 people who exclusively selected non-binary sex, they were reorganised into male/female binary using “random allocation”.

Where an individual provided a male or female response alongside a non-binary sex response, the binary male/female response took precedence.

This “straight washing” of data also occurred in the design of the census forms. Respondents were asked “in which country was the person’s father born?” and “in which country was the person’s mother born?”.

Given the gendered language used in these questions, sufficient data is unable to be produced to specifically identify individuals with same-sex parents, leading many rainbow families to feel as though their presence had been erased.

A screenshot of a 2021 Census form asking about parentage.
Australian Bureau of Statistics/Commonwealth of Australia, CC BY

There are also no specific questions included in the census designed to record sexual orientation, despite at least two government departments being on record at the time professing a need for such data to deliver appropriate and tailored services.

This decision to continue running the 2026 Census as is, without questions on gender identity and sexuality, have also been criticised by some crossbenchers. Independent MP Allegra Spender said the lack of data makes it “impossible to make policy for the LGBTQ+ community”.

The right to be counted

One line of argument that has emerged since the announcement about the 2026 Census is that the government simply dosn’t need to know about the sexuality of its people. This undermines the crucial role the census plays.

The United Nations advises that census data has a global impact. It contributes to:

  • funding allocation

  • urban planning

  • public health

  • infrastructure development

  • evidence-based policy formulation.

Census data has a concrete impact on the livelihood of Australians, contributing to social and economic policy. Decisions about transport, education and health, for example, can be derived from the data we gather in the census.

However, others have reminded us that without this critical information, we don’t know very basic things about our population.

As it stands, we don’t know how many people identify as LGBTIQ+ in Australia. We don’t know where they live or anything about their health, families and socioeconomic status, to name but a few.

What we do know is LGBTQI+ people are at higher risk of mental ill health and suicide and domestic violence. To craft policy responses to fix these things, we need more data.

In lieu of good quality information, decisions made about the LGBTQI+ community are uninformed at best. At worst, LGBTQI+ people are completely ignored.




Read more:
LGBTIQ+ people are being ignored in the census again. Not only is this discriminatory, it’s bad public policy


Ignoring calls for change

The government remained silent on its decision for days.

This week, Deputy Prime Minister Richard Marles said:

we don’t want to open up a divisive debate in relation to this issue […] We’ve seen how divisive debates have played out across our country and the last thing we want to do is inflict that debate on a sector of our community right now.

The decision is clearly being framed as a measure to protect LGBTQI+ people from backlash.

Yet, omitting these questions goes against demands from many LGBTQI+ community organisations, such as Equality Australia, which has gathered roughly 16,000 signatures in their #CountUsIn2026 campaign.

Excluding LGBTQI+ people from the census also goes against the Bureau of Statistics’ best practice standards on collecting data on sex, gender, variations of sex characteristics and sexual orientation.

These standards were designed to be used by government bodies, academics and private organisations in their own “statistical collections to improve the comparability and quality of data”. According to the ABS, researchers should follow the standard for planning, implementing, monitoring and evaluating policies and programs.

The governments’ decision to abandon the LGBTQI+ community under the guise of “protection” goes against these guidelines, as well as requests from governmental organisations, activists and the LGBTQI+ community at large.

It will also likely embolden those who wish to further marginalise LGBTQI+ people and see them excluded from Australian life.

The census doesn’t just inform us about individuals, but tells us which groups the government wishes include and exclude from the population.

Leaving the 2026 Census unchanged sends a message to LGBTQI+ people that they don’t matter in the eyes of the state.

The authors do not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and have disclosed no relevant affiliations beyond their academic appointment.

ref. LGBTQI+ Australians are tired of being ignored. Here’s why counting them in the census is so important – https://theconversation.com/lgbtqi-australians-are-tired-of-being-ignored-heres-why-counting-them-in-the-census-is-so-important-237637

Can a 10-year-old be responsible for a crime? Here’s what brain science tells us

Source: The Conversation (Au and NZ) – By Susan M. Sawyer, Professor of Adolescent Health The University of Melbourne; Director, Royal Children’s Hospital Centre for Adolescent Health, The University of Melbourne

Bricolage/Shutterstock

The age a child can be arrested, charged and jailed in Australia is back in the spotlight.

Last year, the Northern Territory became the first jurisdiction to raise the age of criminal responsibility from ten to 12. Now its new, tough-on-crime government has pledged to return it to ten. It comes after Victoria walked back its earlier commitment to raise the age to 14, settling instead on 12.

But the United Nations Committee on the Rights of the Child says 14 should be the absolute minimum. It raised this age from its earlier recommendation (in 2007) of 12, citing a decade of new research into child and adolescent development.

So what does the science say? What happens to the brain between ten and 14? And how much can those under 14 understand the consequences of their actions?

Who is an adolescent?

Our research shows adolescence is a critical period for development. It’s the time children’s experiences and explorations shape how they develop cognitive skills (including critical thinking and decision making), as well as social and emotional skills (including moral reasoning).

Adolescence also lasts longer than we tend to think. Important brain development begins during late childhood, around eight to nine years. Intense changes then follow during early adolescence (ages ten to 14). But these changes continue well into the twenties, and full cognitive and emotional maturity is not usually reached until around age 24.

However, everyone’s brain matures at a different rate. That means there is no definitive age we can say humans reach “adult” levels of cognitive maturity. What we do know is the period of early adolescence is critical.

What does puberty do to the brain?

Puberty is a defining feature of early adolescence. Most of us are familiar with the changes that occur to the body and reproductive systems. But the increase in puberty hormones, such as testosterone and oestrogen, also trigger changes to the brain. These hormones increase most sharply between ten and 15 years of age, although gradual changes continue into the early twenties.

Puberty hormones change the structures in the brain which process emotions, including the amygdala (which encodes fear and stress) and ventral striatum (involved in reward and motivation).

Two teenage girls wearing glasses lean over a laptop.
A rise in hormones during puberty changes the brain, especially how it deals with emotions.
cottonbro studio/Pexels

This makes adolescents particularly reactive to emotional rewards and threats. Our research has shown the brain’s sensitivity to emotions increases throughout early adolescence until around 14 or 15 years old.

At the same time, changes in puberty have been linked to increased sensation seeking and impulsive behaviours during early adolescence.

This context is crucial when we discuss the behaviour of children in the ten to 14 age range. The way their brains change during this period makes them more sensitive and responsive to emotions, and more likely to be seeking experiences that are new and intense.

How do adolescents make decisions?

The emotional context of puberty influences how younger adolescents make decisions and understand their consequences.

Decision making relies on several basic cognitive functions, including the brain’s flexibility, memory and ability to control impulses.

These cognitive abilities – which together help us consider the consequences of our actions – undergo some of the steepest development between ages ten and 14. By age 15, the ability to make complex decisions has usually reached adult maturity.

A teenage boy carries another on his shoulders while a friend looks on.
The decisions teenagers make are significantly influenced by emotions and their peers.
leah hetteberg/Unsplash

But adolescents at this age remain highly susceptible to emotions. So while their brain may be equipped to make a complex decision, their ability to think through the consequences, weighing up costs and benefits, can be clouded by emotional situations.

For example, research has shown 13-14 year-olds were more distracted from completing a task and less able to control their behaviour when they viewed images that made them feel negative emotions.

The social world of teenagers also has a significant impact on how they make decisions – especially in early adolescence. One study found that while older adolescents (aged 15-18) are more influenced by what adults think when weighing up risk, adolescents aged 12-14 look to other teenagers.

Experiments have also shown adolescents aged 12-15 make riskier decisions when they are with peers than by themselves. Their brain responses also suggest they experience a greater sense of reward in taking those risks with peers.

How do teens understand the consequences of their actions?

The concept of criminal responsibility is based on whether a person is able to understand their action and know whether it is wrong.

Moral reasoning – how people think about right and wrong – depends on the ability to understand another person’s mental state and adopt their perspective. These skills are in development across adolescence.

Research suggests it may take more effort for adolescent brains to process “social” emotions such as guilt and embarrassment, compared to adults. This is similar when they make moral judgements. This evidence suggests teenage brains may have to work harder when considering other people’s intentions and desires.

Young adolescents have the cognitive ability to appreciate they made a bad decision, but it is more mentally demanding. And social rewards, emotions and the chance to experience something new all have a strong bearing on their decisions and actions in the moment — possibly more than whether it is right or wrong.

Early adolescence is critical for the brain

There are also a number of reasons adolescent brains may develop differently. This includes various forms of neurodisability such as acquired brain injury, fetal alcohol spectrum disorder, attention-deficit hyperactivity disorder (ADHD) and intellectual disability, as well as exposure to trauma.

Teenagers with neurodevelopmental disorders will likely cope differently with decision making, social pressure, impulse control and risk assessment, and face extra difficulties. Across the world, they are disproportionately incarcerated.

In Australia, Indigenous children and adolescents are incarcerated in greater numbers than their non-Indigenous peers.

Each child matures differently, and some face extra challenges. But for every person, the period between ten and 14 is critical for developing the cognitive, social and emotional skills they’ll carry through the rest of their life.

The Conversation

Susan M. Sawyer was a member of the Victorian government’s Youth Justice Act Independent Expert Advisory Group. She receives funding from the National Health and Medical Research Council.

Nandi Vijayakumar receives funding from the National Health and Medical Research Council and the Australian Research Council.

ref. Can a 10-year-old be responsible for a crime? Here’s what brain science tells us – https://theconversation.com/can-a-10-year-old-be-responsible-for-a-crime-heres-what-brain-science-tells-us-237552

Labour or leisure? Why a universal basic income might foster wellbeing but not productivity

Source: The Conversation (Au and NZ) – By Alexander Plum, Senior Research Fellow in Applied Labour Economics, Auckland University of Technology

The current cost-of-living crisis, high interest rates and the ensuing economic contraction have disproportionately hit low-income households. And for many low-income workers, the future remains uncertain.

On top of that, the rise of artificial intelligence may result in significant job redundancies and displacements. And recent employment data for New Zealand has been grim, with a rise in the number of unemployed.

The uncertain future of work in general has led many to propose some form of universal basic income (UBI) as a solution. The underlying idea is simple: everyone receives a basic income with no strings attached. Think of something like New Zealand superannuation, but for everyone.

Both the Green Party of New Zealand and the Opportunities Party have put forward a UBI as a practical response to the financial insecurities experienced by low-income households. Some commentators have described the UBI as inevitable.

But would a UBI really work? And by how much could it change the lives of low-income households in particular? As it turns out, a new study from the United States, funded by OpenAI’s founder Sam Altman, provides insights into what can potentially be expected if the UBI becomes a reality.

Altman sees universal cash payments as a possible solution to the large-scale job displacements expected with AI-driven automation. However, the study’s results were not necessarily what supporters of the scheme were hoping for.

UBI in practice

As an unconditional cash transfer, a UBI scheme works differently from a means-tested benefits system (such as the Working for Families tax credit), which requires a family’s economic condition to fall under specific criteria for eligibility. The UBI is for everyone.

Thus, the UBI can be a costly programme for a government, depending on the amount paid. A 2019 study calculated that a UBI at the jobseeker support level of NZ$215 per week would cost $41.3 billion annually.

However, the government can also generate savings by slashing bureaucracy and replacing the welfare system with the UBI.

A number of countries have been exploring what a UBI might mean for them. Finland ran a two-year UBI pilot in 2017 and 2018. This aimed to understand whether an unconditional cash transfer encouraged uptake of low-paid or temporary work among the unemployed.

Two thousand randomly selected unemployed people received €560 (NZ$1,000) monthly. The study found positive wellbeing effects. The basic income recipients were found to be more satisfied with their lives and experienced less mental strain. The impact on employment was also positive but small.

In 2023, England started a two-year UBI trial. The scheme gives 30 people a monthly payment of £1,600 (NZ$3,500). The focus is on how the lump sum transfer affects the mental and physical health of the recipients. The first set of results are expected next year.

OpenAI CEO Sam Altman: would a UBI help soften the impact of AI on the workplace?
Getty Images

UBI and employment

Sam Altman’s US-based study investigated how guaranteed minimum income affects low-income households’ employment and earning prospects.

The study recruited participants from low-income households, aged between 21 and 40 as of 2019, in the states of Texas and Illinois.

The research group consisted of 1,000 randomly selected low-income adult individuals who unconditionally received US$1,000 (NZ$1,700) per month for three years.

To put this amount in perspective, the cash transfer equalled, on average, a 40% increase in household income. Compared with other such studies, both the amount and the duration are unprecedented.

Two thousand participants formed the control group, each receiving US$50 (NZ$85) monthly.

Labour or leisure?

Interestingly, the analysis revealed a 2% drop in labour market participation by those receiving the cash transfer, and a reduction in the weekly number of hours worked by between 1.3 to 1.4 hours.

Similar effects were found for the participants’ partners. The decline in labour market participation reduced individual income by $1,500 a year (NZ$2,500) relative to the control group.

What were the participants doing with the extra time? In theory, the additional financial security for low-income households should enable individuals to spend more time productively.

This could include searching longer for a higher-quality or better-fitting job, starting training or education, building startups, or being productive in non-work activities such as caregiving.

However, the study found an increase in the time spent on leisure pursuits, but no significant improvements in the quality of employment and no significant effects on education or training.

The future of work

The findings suggest the negative labour market implications of UBI may depend on the duration and the generosity of the programme.

A German newspaper summarised these findings as “disenchanting” for supporters of a UBI.

Given the most recent changes to the jobseeker benefit rules in New Zealand, which include benefit sanctions, it is unlikely the current government will consider a programme like a UBI.

But AI is fundamentally changing the nature of work. There may come a time soon when such a cash transfer becomes necessary.

While the overall literature on the effects of unconditional cash transfers offers mixed evidence, the new US study provides crucial insights for policymakers to consider while evaluating the net economic gains from a UBI.

Kabir Dasgupta is currently a senior economist at the Federal Reserve Board, United States of America. The views here are authors’ own and do not reflect those of the Federal Reserve Board of Governors or the Federal Reserve System.

Alexander Plum does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Labour or leisure? Why a universal basic income might foster wellbeing but not productivity – https://theconversation.com/labour-or-leisure-why-a-universal-basic-income-might-foster-wellbeing-but-not-productivity-235523

How low can we go? To cut the carbon that goes into buildings to net zero, we need radical change

Source: The Conversation (Au and NZ) – By Philip Oldfield, Head of School and Professor of Architecture, UNSW Built Environment, UNSW Sydney

Buildings are one of our biggest contributors to global heating. They produce 37% of all greenhouse gas emissions from energy use and production processes. Building emissions are made up of two parts: operational carbon (from energy used to heat, cool and power buildings) and embodied carbon (due to material use and construction).

We know how to reduce operational carbon to net zero by increasing insulation and air-tightness, and by using renewable energy. It’s entirely unclear how we’ll get down to net-zero embodied carbon.

Embodied carbon amounts to about half a new building’s lifetime emissions, so it’s essential to reduce it. As operational carbon emissions are cut, embodied carbon’s share of building emissions could rise to 85% by 2050. So vexed is this problem that some have called for a general “halt to new construction” in the developed world.

Our new research shows while we can greatly reduce embodied carbon in Australia, it will require radical changes in how we design, construct, use and reuse buildings.

Embodied carbon remains unregulated

One of the biggest challenges is that embodied carbon is entirely unregulated, except in five countries – Denmark, Finland, France, the Netherlands and Sweden – that have brought in minimum standards. In most other places, it can effectively be as high as you like.

This is a problem, because the materials we use to build have enormous environmental impacts. Cement production is responsible for 8% of all greenhouse gas emissions and steel another 7%. Aluminium, copper, glass, bricks and more all add significantly to global emissions.

In response, the World Green Building Council has set targets to reduce embodied carbon by 40% by 2030, and to net zero by 2050. But there is little consensus about how this can be achieved, or even if it’s possible.

How low can we go?

Our study explores the extent to which we can reduce embodied carbon in Australian office buildings.

We took a “best practice” office building with a hybrid structure of timber and concrete, and redesigned it with a standard concrete frame to reflect a more conventional building. We then measured their upfront embodied carbon – the carbon needed to construct each building in the first place. The best-practice example had 14% less embodied carbon than the conventional building – good, but some way off our 2030 aspirations.

So, we redesigned the building again. We made the structure entirely timber and added columns to remove the need for beams. This might seem like a minor change, but more columns would require a shift away from the “open plan” offices that have become the norm.

We also used straw insulation in the walls, reduced glazing and unnecessary finishes, and increased reused and recycled materials throughout. By the end we had cut the upfront embodied carbon by 45%, from 520 kilograms of CO₂ equivalent per square metre to 287kg. But many of the moves we made are far more radical than common industry practice.

Wood is good, but isn’t the whole solution

We also tested to see if we could reach net zero embodied carbon by including the “biogenic carbon” stored in the timber and straw. When plants grow, they absorb carbon dioxide and store the carbon in their biomass. Including this stored carbon meant we could achieve net zero and even net negative embodied carbon results – more carbon was stored in the materials than was emitted to construct the building.

This sounds great in theory. In practice it’s a bit of an accounting trick. For instance, it leads to a paradoxical situation where adding more timber to a building, even when it isn’t needed, reduces the emissions on paper.

It can also lead to problems in the future. Any carbon stored in natural materials will always be released at the end of the building’s life, when the materials are burnt, go to landfill or are recycled. This means while embodied carbon may be low or even negative to start with, there will be a spike in emissions years down the line.

However, our study shows small decisions can have a big impact. Of all the changes we made, the one that reduced embodied carbon the most was simply replacing carpet with hardwood floors. This saved 625 tonnes of carbon (77kg per square metre). This was due to carpet having to be replaced every ten years and hardwood lasting three times longer.

3 essential steps to make bigger reductions

Part of the challenge with embodied carbon is just how much we’re going to build in the coming decades. It’s estimated there will be 230 billion square metres of new construction between 2020 and 2060. That’s equivalent to constructing the floor area of all the buildings in Japan, every year, for 40 years.

If all this was built in the same way as the typical office building in our study, it would add 120 billion tonnes of greenhouse gas emissions. Construction alone would use up almost half of our total remaining carbon budget to stay within 1.5°C global warming. This is inherently unsustainable and demonstrates the scale of the challenge we face.

While our research shows how we can reduce this impact, reductions beyond 45% will require more systemic changes. We will need to:

  • regularly retrofit and reuse the buildings we already have, instead of creating entirely new ones

  • recycle and reuse materials more, instead of using new materials

  • build smaller buildings, and fundamentally question just how much floor area we actually need.

These options may seem radical, but climate science tells us we must cut emissions now to avoid catastrophe. A 40% reduction of embodied carbon today, through the measures we outline, would be a good start on the pathway towards a low-carbon built environment.


We would like to acknowledge Damian Hadley, Scott Balmforth and Anh Nguyen for their contributions to this research.

Philip Oldfield has received grant funding from multiple sources and is an Advisory Group Member of the Council on Tall Buildings and Urban Habitat (CTBUH), and the James Martin Institute. This research was funded by an Innovation Connections Grant from the Australian Department of Industry, Science and Resources and funding from Terroir.

Gerard Reinmuth owns shares in TERROIR Pty Ltd whose work was used as a subject for the research and who co-funded it in collaboration with the Australian Department of Industry, Science and Resources Innovation Connections program.

William Craft has received grant funding from multiple sources. This research was funded by an Innovation Connections Grant from the Australian Department of Industry, Science and Resources and funding from Terroir.

ref. How low can we go? To cut the carbon that goes into buildings to net zero, we need radical change – https://theconversation.com/how-low-can-we-go-to-cut-the-carbon-that-goes-into-buildings-to-net-zero-we-need-radical-change-236326

They come from above: here’s why magpies, magpie-larks and lapwings swoop in spring

Source: The Conversation (Au and NZ) – By Meg Edwards, Lecturer in Wildlife Science, University of Southern Queensland

Transport and Main Roads Queensland , CC BY

If you live in Australia or New Zealand, the coming of spring is a mixed blessing. The days get warmer. Flowers bloom. Birds nest.

It’s this last change which can be a problem. Nesting makes male birds from species such as magpies, magpie-larks and masked lapwings (also known as plovers) territorial and protective – and willing to dive-bomb humans.

One species is notorious – the Australian magpie. This iconic black and white songbird is a familiar sight in cities and towns across both Australia and New Zealand, as it was introduced to New Zealand in the 19th century, where it is now common. The magpie’s strong beak and powerful wings can provoke fear amongst walkers, joggers and cyclists.

This year, the swooping started early. More than 450 incidents were recorded on Magpie Alert before the formal start of spring. Most swooping incidents cause fear but not injury. Actual injuries occur 10-15% of the time. While some injuries come from claws or beak, many more occur when we try to flee and fall over. Very rarely, swooping can trigger more serious injuries or even death.

What’s behind swooping behaviour?

When a magpie swoops you, it’s defending its nest and chicks. It sees you as a potential threat.

Australian magpies start their breeding season in winter. They build basket-like nests of sticks and twigs which they line with soft materials such as grass and hair. Peak breeding season comes between August and November when eggs and chicks are in the nest. These four months are when swooping increases.

The good news is swooping season is usually only intense for a few weeks while the chicks are most vulnerable in the nest, which usually happens sometime between August and October.

Fast-moving cyclists are seen by these birds as a particular threat. Data from MagpieAlert, the public database of attacks, indicates cyclists are the number one target. But humans aren’t being singled out – magpies can swoop other birds to defend their territory and suitable nesting sites, or protect their young from predatory birds, cats, or foxes.

Generally, male magpies will perform a warning swoop when they perceive danger. If that’s ignored, they can swoop a second or third time. This is often combined with alarm calls and clapping their beak to make warning sounds.

Masked lapwings can swoop to defend their chicks.
Jude Black/Shutterstock

Only around 10% of nesting magpies actually swoop humans. But if you’ve been swooped before, you’re more likely to be swooped again. Magpies can recognise and remember human faces, and have been known to swoop the same people year after year.

Magpies tend to swoop from above. But magpie-larks – the unrelated black and white bird also known as peewees or mudlarks – can actually do more damage. When they swoop, they come in from the front and can go for the eyes.

Other swooping birds in Australia include noisy miners – small native grey and yellow birds common in urban areas. These aggressive honeyeaters work as a pack to drive away threats – which can include us. They can also attempt to get food from unsuspecting picnickers. Then there are the masked lapwings, who nest on the ground and can swoop if you get too close.

Swooping is done to defend the nest. Pictured are three magpie-lark babies.
crbellette/Shutterstock

Swooping birds around the world

While Australia’s magpie has an international reputation for swooping, it’s not the only notorious species.

In North America, red-winged blackbirds are known to swoop during their breeding season, while the American crow can be very territorial during spring. If you anger an American crow, the highly intelligent bird will remember your face – and can pass down its grudge to the next generation.

While seagulls around the world can swoop, it’s not done to drive you away but rather to steal your hot chips.

The Australian magpie was named after the Eurasian magpie due to their similar black and white colouring. But the Eurasian magpie does not swoop, even though it’s related to crows. The Australian magpie is not from the crow family – its closest relatives are butcherbirds – songbirds with strong beaks.

The importance of songbirds

Barring seagulls and masked lapwings, these swooping species have one thing in common – they’re songbirds, meaning they belong to the order Passeriformes. This should come as no surprise given the Australian magpie’s warbling repertoire of calls and songs.

Songbirds make up nearly half of all bird species globally. This enormously influential group of birds actually evolved in Australia.

This group of birds are highly varied, from tiny fairy-wrens to larger corvids such as crows. They play an essential ecological role in our natural world, acting to disperse seeds, clean up dead creatures by scavenging, helping to pollinate plants, eating insects and pests and returning nutrients to plants via their poo.

Be alert, not alarmed

If you’re weary of being swooped, choose a different path for a couple of weeks until the chicks have left the nest.

Magpies often nest in the same area each year, so if you’ve been swooped before, consider avoiding that route.

Protective gear such as sunglasses and a hat can help you avoid injury. Wearing sunglasses on the back of your head or sticking fake eyes to the back of your helmet or hat can help, as magpies do not like to be looked at when swooping.

If you are unlucky enough to be swooped, try not to run or scream as this can make you seem an even bigger threat. Instead, move out of the bird’s territory as soon as possible.

This spring, keep an ear out for the beautiful calls of our songbirds – and an eye out for our overly protective flying friends.

Meg Edwards does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. They come from above: here’s why magpies, magpie-larks and lapwings swoop in spring – https://theconversation.com/they-come-from-above-heres-why-magpies-magpie-larks-and-lapwings-swoop-in-spring-237213

Ocean heat is changing marine food webs – with far-reaching consequences for NZ fisheries and sea life

Source: The Conversation (Au and NZ) – By Anne Rolton Vignier, Scientist in Shellfish and Algal Biology, Cawthron Institute

The global ocean continues to warm at a concerning rate.

Satellite measurements of average sea surface temperatures show February this year was the highest for any month in the 45-year dataset, and the warming trend continued in May.

New Zealand’s sea temperatures are also hitting record highs. Between 2022 and 2023, oceanic and coastal waters reached their warmest annual temperatures since measurements began in 1982, according to Stats NZ data.

This warming is already threatening coral reefs – the Great Barrier Reef is the hottest it’s been in 400 years – and marine life. But it is also reshaping ecosystems at the very basis of ocean food webs.

Microscopic algae, or phytoplankton, are ubiquitous in the surface layers of the ocean. They represent the foundation of the marine food web and serve as a substantial carbon sink.

Each day, they take up more than a hundred million tonnes of carbon dioxide through photosynthesis. The carbon then either sinks to the bottom of the ocean as the microalgae dies off or is “fixed” in tiny animals that graze on the plants.

Already, scientists are observing a downward trend in this ocean production, leading to expanding “ocean deserts” and the depletion of beneficial microalgae in favour of harmful algal blooms.

Unless we act to cut emissions, these shifts in microalgal composition are projected to get worse as ocean temperatures continue to rise, globally and regionally in the waters off Aotearoa New Zealand.

Global ocean temperatures have remained well above average during the 12 months to May 2024.
Copernicus Climate Change Service/ECMWF, CC BY-SA

Shifts in microalgal communities in New Zealand

We are already seeing changes in New Zealand’s microalgal communities.

The abundance and activity of microalgae is usually measured by tracking Chlorophyll A, the pigment most plants use for photosynthesis. Recent reports by Stats NZ show shifts in microalgal biomass, with increases in some regions and declining levels in others.

This graph shows changes in phytoplankton biomass along New Zealand’s coast from 2003 to 2022.
Author provided, CC BY-SA

Apart from these shifts in biomass, studies have also shown changes in the make-up of microalgae and reduced species diversity. This leads to stunted ecosystems which are less resilient to environmental changes, have lower productivity and capture less carbon.

Abrupt shifts in microalgal communities can drive ecosystems into altered states, affecting food webs and fisheries. Such a “regime shift” happened in the North Pacific in 1977 and 1989, with far-reaching consequences for the the entire ecosystem and salmon and halibut fisheries.

More recently in New Zealand waters, lower microalgal biomass and a collapsing food web have been implicated in the cause of “milky flesh syndrome” in snapper from the Hauraki Gulf.

Harmful algal blooms

Harmful algal blooms also appear to be on the rise in New Zealand. The toxins these microalgae produce accumulate in shellfish, and their consumption can be poisonous for people and animals and threaten the economic stability of fisheries.

Globally, the impacts of harmful algal blooms cost the blue economy more than US$8 billion per year. More than US$4 billion of this relates to human health impacts.

According to data gathered by the Ministry of Primary Industries, the rise in harmful algal blooms in New Zealand during 2023/24 resulted in the highest number of shellfish harvest closures from biotoxins this decade.

Rising ocean temperatures can accelerate the growth of microalgae that cause toxic blooms, while reducing the nutritional quality and size of microalgae species other marine organisms depend on for food.

As our research shows, microalgal toxins affect the reproduction and early life stages of shellfish species indigenous to New Zealand. New Zealand’s fisheries and aquaculture sectors, collectively worth nearly NZ$4 billion, already face harvest closures, stock losses and reduced recruitment of larvae.

There is still much we don’t fully understand about the links between climate change and toxic harmful algal blooms, but the potential for serious ecological damage was demonstrated by the 1998 bloom in Wellington Harbour, which caused a mass die-off of all marine life on the seafloor.

Climate change affects the physiology of microalgae, which in turn has impacts on other marine organisms.
Eden Cartwright, Bird Circus, CC BY-SA

Toxic microalgal blooms can also kill marine mammals or make them less resilient to other stress factors, such as higher temperatures.

Addressing the challenge

Understanding how microalgal communities might change under different climate scenarios is a crucial first step.

This knowledge will help us forecast and investigate the downstream effects on the marine environment and develop effective management strategies to safeguard ocean ecosystems and public health.

Knowing when and where harmful algal blooms are likely to occur will lessen the risk for industry and enable effective restoration efforts. Improving our knowledge of the impacts of microalgal toxins on human health will enable safe recreational water use and give clarity on appropriate responses to algal blooms.

Filling these knowledge gaps is urgent. Changes in microalgal communities are already evident and will likely continue at an accelerating pace, with possibly irreversible knock-on effects on ecosystems and ocean-based industries.

Anne Rolton Vignier receives funding from the New Zealand Ministry of Business, Innovation and Employment.

Kirsty Smith receives funding from the New Zealand Ministry of Business, Innovation and Employment.

ref. Ocean heat is changing marine food webs – with far-reaching consequences for NZ fisheries and sea life – https://theconversation.com/ocean-heat-is-changing-marine-food-webs-with-far-reaching-consequences-for-nz-fisheries-and-sea-life-236427

How can you support your Year 12 student during their final exams?

Source: The Conversation (Au and NZ) – By Penny Van Bergen, Head of School of Education and Professor of Educational Psychology, University of Wollongong

Thanumporn Thongkongkaew/ Shutterstock, CC BY

Year 12 students are less than two months away from sitting their final exams. We know this can be a stressful time for students.

How can parents best help their children navigate exam season? Research suggests “autonomy-supportive parenting” is key. This involves including teens in reasoning and decision-making about their lives.

Understanding the brain and learning

When it comes to studying, it is helpful to know how the brain works.

One common misconception is multitasking can help students do more in less time. In fact, this can drain our capacity to pay attention. You may think you are multitasking but what you are really doing is switching from one task to the next. Each switch has a “cost” for performance, in that it slows you down.

To combat this, try and get your student to focus on one thing at a time – helped by a calm, quiet study environment.

A second misconception is studying according to one’s “learning style” (for example, as a visual, auditory or kinesthetic learner) will promote better learning.

But these learning styles have been shown to be a a myth. If students study using only one mode – such as via videos for those who believe themselves to be visual learners – they are likely to harm their own learning. This is because they will limit their access to the most relevant study resources (those that best present the knowledge).

Parents can help their teens prepare for exams by focusing on the content rather than the mode of delivery.

Multitasking does not help you study.
Ollyy/Shutterstock, CC BY

Sleep is so important

Sleep is an important component of study and exam preparation.

This is because sleep is crucial for “memory consolidation”, where newly laid memory pathways are strengthened and reinforced. Sleep deprivation interrupts this consolidation process and hinders learning the next day. It means there is less activation in parts of the brain involved with memory, self-regulation and attention.

Research shows up to half of Australian teenagers do not get enough sleep, with common disruptors including screen time, studying and socialising. In the lead-up to Year 12 exams, the temptation to stay up late to study – perhaps buoyed by energy drinks – may be particularly strong.

Parents can help their teens by working out a consistent sleep schedule together. They can also help their teens understand the connection between sleep and learning and the importance of reducing screen time before bed.

Sleep plays a crucial role in learning and memory.
Zhukovvvlad/Shutterstock, CC BY

Maximising study quality

The nature of Year 12 exams means students must study for multiple subjects at the same time.

This means the quality of study is especially important. Students should select study strategies that actively support memory and learning.

Many students report using less effective strategies, such as rereading and highlighting. These strategies are passive, meaning the brain does not need to do anything with the content.

Active strategies, such as doing practice tests (a version of “retrieval practice”), are effective because they require the brain to actively draw knowledge from long-term memory. The relevant knowledge must then be arranged into a response. This strengthens the memory pathway and the knowledge becomes easier to recall in future.

You can help your teen to study by encouraging different types of retrieval practice. This can include practice tests, but can also mean asking them to explain new concepts or to put arguments into their own words.

You could also encourage your teen to design a study schedule that includes a little of each subject, multiple times per week, rather than cramming on the final day.

While teens may be inclined to cram before the exam, studies have shown stronger learning outcomes when the same amount of study is spread out over a longer period. This pattern, called “spaced learning”, gives the brain more opportunities to retrieve the relevant knowledge from memory.

A useful amount of stress?

Stress has a “curvilinear” relationship with performance (sometimes known as the Yerkes-Dodson bell curve).

A little bit of stress is useful at exam time because it motivates study. But too much stress can impair students’ performance by inhibiting learning pathways and brain function.

The Yerkes-Dodson curve showing the relationship between stress and performance.
Wikimedia Commons, CC BY

Up to one in four Australian teens experience clinical levels of stress and anxiety in the lead-up to final-year exams. Perfectionism, female gender and parental pressure are risk factors.

When the consequences of not doing well are emphasised (“if you fail your exams you won’t get a good job”), it’s not helpful for teens. It is important to keep things in perspective.

The Australian Tertiary Admission Rank (ATAR) has long been the primary selection tool used by universities, yet many also offer early entry places and alternative entry pathways. This means students who do not achieve the ATAR they were expecting still have plenty of opportunities to pursue their chosen career.

Parents can support their teens by talking with them about taking time to connect with friends and family, emphasising the importance of calm and consistent study, and by not catastrophising about their teen’s future. Parents who stay calm about exams will have teens who are more likely to do the same.




Read more:
Unsure what to study next year? 6 things to consider as you make up your mind


Penny Van Bergen receives funding from the Australian Research Council and the NSW Department of Education.

Erin Mackenzie receives funding from the NSW Department of Education.

ref. How can you support your Year 12 student during their final exams? – https://theconversation.com/how-can-you-support-your-year-12-student-during-their-final-exams-237467

Yes, you can borrow money to invest in shares. But it comes with big risks

Source: The Conversation (Au and NZ) – By Sean Pinder, Associate Professor, Finance, The University of Melbourne

In their scramble to secure a foothold on an increasingly unaffordable housing ladder, some young investors might be looking for new ways to boost their returns on savings.

One such approach – albeit highly risky – is “leveraged investing”. In simple terms, this means borrowing money to invest.

Holding a mortgage is itself one way of doing this. This is because the relatively small deposit you pay to secure the loan exposes you to the capital gains (or losses) on an entire property as prices go up (or down).

Borrowing to invest in other assets is less common. But large corporations do it all the time. There are ways for individuals to do it too, including with relatively new financial products called “geared exchange-traded funds”.

So how do individual investors currently take advantage of leverage in the share market – and what might the risks be?

Margin lending

On face value, the mathematics of borrowing to invest might seem simple and alluring.

If an investor can borrow at an annual interest rate of 9% to invest in an asset with an expected annual return of 15% – and if those expectations are actually realised in the market – they get to pocket the excess of 6% (minus any fees).

Borrowing to invest in shares is far less common than borrowing for property.
Jandrie Lombard/Shutterstock

The traditional method for borrowing to invest is called “margin lending”. A lender, such as one of the big four banks, lends money to an investor which they then invest in the stock market.

The amount lent is typically determined by the amount of collateral an investor can produce to secure the loan.

For example, using a common loan-to-value ratio of 70%, an investor with a diversified portfolio of shares worth $20,000 could borrow an additional $47,000 to invest in the stock market.

This would give them a stock market exposure of $67,000 in total. But in return, the investor would have to pay interest on the loan.

If the stock market declines so much that the loan-to-value ratio falls below the lender’s minimum requirements, the investor will also have to cough up some additional capital as collateral. This is what’s known as a margin call.

Margin lending isn’t uncommon in Australia. Recent figures from the Reserve Bank of Australia show that in the March quarter this year, more than $15.8 billion was loaned across 80,000 client accounts in Australia.

In that same quarter, there were 367 margin calls made. Margin investing requires a bit of ongoing attention, and carries with it an administrative burden that many retail investors would be keen to avoid.

Greater exposure to the whole market

An alternative method of leveraged investing is to invest in a geared exchange-traded fund (ETF). These are relatively new on the scene.

ETFs are financial products that bundle together a wide range of investments into a single offering that can be bought and sold on a stock exchange. For example, an ETF might track the movement of stocks in a major index or companies in a particular sector.

A geared ETF, like a margin loan account, will have a target loan-to-value ratio that looks to boost returns from an investment. But it’s a professional fund manager doing all the borrowing.

An individual investor in a geared ETF will just see higher peaks and deeper troughs in price movements than a non-geared equivalent.

Promoters of these funds suggest that two key features provide clear advantages over traditional margin loans.

First, because of their size, the funds can borrow money to invest at institutional interest rates. These are expected to be lower than the rate applicable to individual margin accounts.

Second, there are no margin calls for individual investors. Instead, if the value of the investment falls enough to make loan-to-value ratio unacceptable, the fund sells down some of its assets to bring down its level of debt.

What could possibly go wrong?

A lot. All investing comes with a level of risk. Borrowing to invest adds a whole new level. Here are some of the biggest factors to be aware of.

First and foremost, leveraged investing can magnify gains – but it can also magnify losses. The extra volatility of these strategies means sharp market movements can quickly wipe out much of an investment. This is true for both margin lending and geared investment products.

Using debt to invest means any losses could be severely amplified.
Arsenii Palivoda/Shutterstock

And while returns are uncertain, the interest on debt is not. Regardless of whether the market is up or down, whether the investor has borrowed on their behalf or a leveraged ETF has done it for them, interest has to be paid on the debt used.

This can weigh heavily on a portfolio’s returns, and when markets are down, further amplify losses.

One further risk is unique to ETFs – tracking error. This arises when their returns don’t “track” the returns from the benchmark indexes they’re supposed to be imitating.

Everyday ETFs manage this error by continuously buying and selling assets to “rebalance” their portfolios. But leveraged ETFs have the additional task of buying and selling shares in a falling market to maintain their target loan-to-value ratio.

This additional drag on returns is referred to as “slippage” and has been identified by regulators as an extra risk retail investors should be aware of before considering investing in leveraged ETFs.

Does leverage provide the opportunity to magnify stock market gains? The answer is yes, but not without a cost that many may find unbearable if markets happen to move against them.

And it’s important to note that our discussion here is only very general in nature, and is not intended as financial advice. All investments carry risk.

Sean Pinder does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Yes, you can borrow money to invest in shares. But it comes with big risks – https://theconversation.com/yes-you-can-borrow-money-to-invest-in-shares-but-it-comes-with-big-risks-237206

Diagnostic labels may increase our empathy for people in distress. But there are downsides too

Source: The Conversation (Au and NZ) – By Nick Haslam, Professor of Psychology, The University of Melbourne

Farknot Architect/Shutterstock

The language of mental ill health is inescapable. Diagnostic terms, such as depression and post-traumatic stress disorder (PTSD), pervade popular culture and saturate the online world. They are the currency of countless news stories and awareness campaigns.

The rise of diagnostic labels could be celebrated. It suggests the public’s mental health literacy is increasing and the stigma attached to mental illness is in decline. As the shame associated with it diminishes, mental illness comes out of the shadows.

But the rise of diagnostic language may also have downsides. Some critics argue it reflects the medicalisation of distress and may contribute to over-medication. And just as naming conditions may reduce stigma, it could also increase it. Labels can be sticky, having lasting effects on how others judge people with mental illness, and how they see themselves.

In a new study, my colleagues and I examined how labelling a person’s relatively mild or marginal mental health problems affects how others perceive them.

We found the presence of labels increases empathy and concern for those affected, but also pessimism about their capacity to recover. Essentially, diagnostic labels appear to be a mixed blessing when used at the less severe end of the distress spectrum.

Concept creep

When we talk about the rise of diagnostic labels, a particular concern is that concepts of mental illness have been expanding in recent years. They now encompass a wider range of experiences than they did previously. This so-called “concept creep” implies people may be using diagnostic terms to refer to phenomena that are relatively mild or marginal.

British psychologist Lucy Foulkes has argued people may be increasingly over-identifying mental illness. This means they are applying diagnostic labels to experiences that fall below the diagnostic threshold.

Recent studies (including those from my research group) support this possibility. This research has found people who hold expansive concepts of mental illness are more likely to diagnose themselves than those with narrower concepts.

The implications of applying diagnostic terms loosely are unclear. Using them to label relatively mild distress might have positive effects, such as encouraging people to take that suffering seriously and seek professional help.

But it might equally have negative effects, stigmatising the labelled person or leading them to be defined and constrained by their illness. It might even lead people to diagnose themselves inappropriately.

A young man seated on a couch appears pensive.
Concepts of mental illness have broadened in recent years.
February_Love/Shutterstock

Our study

We wanted to understand the impact of these broadened concepts of mental illness by examining how diagnostic labelling influences the perception of people experiencing relatively mild problems.

Across two experiments, we presented almost 1,000 American adults with short descriptions of a hypothetical person experiencing a marginal, non-severe mental health problem. Each description was carefully tested to fall near the diagnostic threshold.

Participants were randomly assigned to read otherwise identical descriptions either with or without a diagnostic label (major depressive disorder, generalised anxiety disorder and bipolar disorder in experiment one, and PTSD, obsessive compulsive disorder and binge-eating disorder in experiment two).

After reading each description, we asked participants to report how much empathy they felt towards the person, how appropriate they were for professional treatment, and how much they should receive accommodations at school or work, such as extra time on assignments or special leave.

We also asked how likely they thought the person would be to recover fully (both experiments) and how much control they had over their problems (experiment two). We then compared these judgments between the label and no‑label conditions.

Labels had an impact

Participants who read descriptions preceded by a diagnostic label tended to report greater empathy toward the person and more support for efforts to accommodate their problems. They also saw the person as more appropriate for treatment than those who read the same descriptions unlabelled.

At the same time, the presence of labels led participants to see the person’s problems as more lasting and their recovery as less under their control.

Many of these judgments varied between disorders. There was some evidence that labelling effects were strongest for less familiar disorders such as binge-eating and bipolar disorders.

A man talking to a female counsellor or psychologist.
The presence of diagnostic labels influenced how participants viewed the hypothetical people in our study.
Okrasiuk/Shutterstock

Mixed blessings

When diagnostic labels are applied to marginal cases of mental illness, the implications seem to be mixed. On the one hand, labels legitimise help-seeking, promote flexible support and boost empathy. These positives contradict suggestions that labelling promotes stigma.

However, diagnostic labels also seem to encourage the view that mental health problems are persistent and that people have limited capacity to overcome them. In other words, diagnostic labels may lead people to see mental illness as an enduring identity rather than a transient state. These perceptions may erode expectations of recovery for people experiencing problems and undermine efforts to achieve it.

Even the apparent benefits of labelling could have a downside in the context of relatively mild distress. It might encourage unnecessary and ineffective treatment or entrench a “sick” role by offering special accommodations to people with marginal impairments.

Our findings shed light on the possible consequences of the ongoing expansion of diagnostic concepts. As these concepts spread to less severe forms of distress and impairment, and diagnostic labels are used more loosely, we must be alert to the probable costs as well as benefits.

The Conversation

Nick Haslam receives funding from the Australian Research Council.

ref. Diagnostic labels may increase our empathy for people in distress. But there are downsides too – https://theconversation.com/diagnostic-labels-may-increase-our-empathy-for-people-in-distress-but-there-are-downsides-too-237553

Why Americans do political speeches so well (and debates so badly)?

Source: The Conversation (Au and NZ) – By David Smith, Associate Professor in American Politics and Foreign Policy, US Studies Centre, University of Sydney

The recent Democratic National Convention in Chicago was a showcase of impressive speeches. Presidential nominee Kamala Harris justified the newfound enthusiasm of Democrats with a strong acceptance speech, but even she couldn’t match the oratorical power of Michelle and Barack Obama two nights earlier.

US political culture is marked by visionary speeches, from Abraham Lincoln’s Gettysburg Address and William Jennings Bryan’s “Cross of gold” to Martin Luther King’s “I have a dream” and Ronald Reagan’s “Tear down this wall”. This rhetorical tradition infuses events such as party conventions, where memorable speeches can lay the groundwork for presidential careers.

Australia also has some justly famous political speeches. There was Robert Menzies’ “Forgotten People” address of 1942, Paul Keating’s Redfern speech in 1992, and Julia Gillard’s “misogyny speech” to parliament in 2012. Noel Pearson’s eulogy for Gough Whitlam in 2014 was a rhetorical masterpiece.

But these speeches are memorable because they are so rare. Australian politicians need to be good communicators, but they are not expected to deliver the kind of soaring, visionary rhetoric we see so often in the US. Why is this?

Politics with the soul of a church

US party conventions often look like Hollywood awards ceremonies, and Steven Spielberg was involved in the planning of the recent DNC. Hollywood has become an indelible part of US political culture.

Reagan, a former Hollywood actor, set new standards for how telegenic and entertaining presidents could be. Donald Trump may not be everyone’s idea of a great orator, but the former reality TV star is certainly a master of televised spectacles.

The tradition of preaching is an even deeper cultural source of US political rhetoric. With about 30% of Americans attending religious services regularly, the sermon is the most prevalent form of public speech in the US.

American preachers need to be compelling, given the level of religious competition, and church is where many future politicians first encounter the craft of public speaking. American political speeches often reflect the combination of uplift and warning found in preaching.

While evangelical Christianity is usually associated with the Republican Party, it is also in the DNA of Democrats because of the Civil Rights Movement and the black church. One of the standout speakers of the DNC was Georgia Senator Raphael Warnock, senior pastor of the same Baptist church in Atlanta where Martin Luther King Jr preached.

Warnock described Trump in biblical terms as a “plague on the American conscience”. But he also described a vote as “a kind of prayer for the world we desire for ourselves and for our children”.

Australia has no shortage of politicians who were raised as Christians and have Christian commitments. But unlike in the US, where even secular politicians must pay lip service to prayer, Christian politicians in Australia must adapt themselves to the secularism of Australian culture. This culture does not expect politicians to preach.

Strong speeches for weak parties

Michelle Grattan last week described Australian party conferences as “mind-numbing” compared with the “Hollywood extravaganzas” of their US counterparts.

But the spectacles at US party conventions testify to the weakness of American political parties. The Democratic and Republican National Committees have little power. Party organisations are localised and fragmented. They lack the central authority found in Australian parties, and the national convention every four years is the only time a nationwide party truly comes into existence.

Even in Congress, parties have few mechanisms for disciplining their members. Party leaders are forced to negotiate with their own side, not always successfully. Party conventions see an extravagant display of unity behind a newly nominated candidate. This is one of the few moments party unity is guaranteed.

While there is plenty of competition for power within Australian parties, in Australia it mostly takes place behind closed doors within party hierarchies. In the US, would-be legislators and executives need to campaign publicly to win the often brutal primary elections that earn them the party’s nomination.

Successful candidates must create their own personalised campaigns. They have help from local party organisations, which coordinate resources and volunteers, but they need much more than that. A candidate for national office must build their own coalition of donors that would dwarf anything a party could provide.

Hence the need for good speech-making. Competition for the attention of donors and voters is fierce, and a compelling speech is a vital way to stand out. This is especially true of candidates such as Barack Obama, who came from outside the party’s traditional power bases.

In Australia, inspirational speeches don’t have the same political currency. A system of strict party discipline, small preselection contests and short, relatively cheap election campaigns means candidates are rewarded more for other political skills.

The Australian advantage: debating

While a US politician might give a more entertaining stump speech than an Australian one, an Australian politician would probably perform better in any scenario that requires unscripted comments – especially a debate with an opponent.

Even superb US political orators can be underwhelming when they don’t have a script and a receptive audience. Congressional debates consist of prepared speeches with little direct engagement between opponents. There is no equivalent to Parliamentary Question Time, and holders of executive office (such as the president or state governors) aren’t even in the legislature.

While Congressional committee hearings can sometimes provide a simulation of the rowdiness we associate with Question Time, the structure of Congress isn’t conducive to debate in the same way.

The physical format of Westminster parliaments, with opponents facing each other directly, attests to an adversarial nature that was there from the beginning. The power of Gillard’s “misogyny speech”, which went viral globally, came partly from the way she delivered it straight into Tony Abbott’s face.

US Congress was designed differently. The framers of the Constitution loathed the idea of factions, and imagined a legislature made up of representatives who would negotiate with each other to find consensus. Congress in turn would have to negotiate with the president, who would rarely need to engage publicly with its members.

This may explain why, despite the routine brilliance of convention speeches, US presidential debates are so tedious and forgettable. Commentators who try to hype these debates by citing “great moments” from past debates inevitably reach for the same ancient zinger, “you’re no Jack Kennedy”, delivered by forgotten vice-presidential candidate Lloyd Bentsen in 1988.

The sad reality is that the most memorable and consequential presidential debate in living memory is the one we just saw, where Joe Biden performed so badly he ended his hopes of a second presidency.

In the land of the scripted, the teleprompter is king.

The Conversation

David Smith does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Why Americans do political speeches so well (and debates so badly)? – https://theconversation.com/why-americans-do-political-speeches-so-well-and-debates-so-badly-237314