The Conversation Weekly

Police in Australia are continuing a huge manhunt in the mountains for Dezi Freeman, a man accused of killing two police officers and injuring a third in late August. Freeman identifies as a sovereign citizen, someone who believes they aren't subject to the law.In this episode we speak to criminologist Keiran Hardy from Griffith University about the origins of the sovereign citizen movement in the US, how it spread to Australia and was taken up by the self-styled Prince Leonard in the 1970s, and why the movement grew during Covid-19. This episode was written and produced by Mend Mariwany and Gemma Ware with assistance from Katie Flood and editing help from Ashlynee McGhee. Sound design and mixing by Eloise Stevens and theme music by Neeta Sarl. Read the full credits for this episode and sign up here for a free daily newsletter from The Conversation.If you like the show, please consider donating to The Conversation, an independent, not-for-profit news organisation.

As China invited world leaders to a vast military parade marking the end of the second world war on September 3, President Xi Jinping said China is "never intimidated by bullies" and would "stand by the right side of history". In a coded message about China's territorial ambitions over Taiwan, Xi added that "the great rejuvenation of the Chinese nation was unstoppable".China and Taiwan both claim their forces bore the true burden of Chinese resistance against Japan during the second world war, and use this contested history to lay claim to power and territory. Now China is weaponising this history, pushing for a "correct" perspective of the war as it seeks to reshape the world order. In this episode, historian Meredith Oyen from the University of Maryland, Baltimore County, explains how disagreements between China and Taiwan over who fought the Japanese more than 80 years ago are still raging and why China's military parade raised tensions with Taiwan up another notch. This episode was written and produced by Mend Mariwany and Gemma Ware with assistance from Katie Flood. Sound design and mixing by Eloise Stevens and theme music by Neeta Sarl. Read the full credits for this episode and sign up here for a free daily newsletter from The Conversation.If you like the show, please consider donating to The Conversation, an independent, not-for-profit news organisation.

If you’ve ever experienced a state of creative flow, perhaps when writing, playing music, or even gardening, you’ll know that it feels like everything just clicks into place. But what is actually happening inside the brain?This week, we're re-running an episode first published in June 2024 featuring neuroscientist John Kounios at Drexel University in the US. He scanned the brains of jazz musicians as they were improvising, and revealed the secret ingredients need to achieve a state of creative flow.This episode was written and produced by Mend Mariwany and Gemma Ware. Sound design and mixing by Eloise Stevens and theme music by Neeta Sarl. Read the full credits for this episode and sign up here for a free daily newsletter from The Conversation.If you like the show, please consider donating to The Conversation, an independent, not-for-profit news organisation.

AI is transforming the world around us, offering increased productivity and promising to tackle difficult problems like global warming. But behind the scenes, its environmental costs are mounting. From massive energy use to vast quantities of water required to cool data centres, AI’s footprint is growing fast. So, in an age of water scarcity and climate crisis, can we justify this technological boom?As The Conversation Weekly team takes a production break in August, we're delighted to bring you an episode of LSE IQ, an award-winning, monthly social science podcast produced by a team from the London School of Economics and Political Science. Each episode they ask leading social scientists and other experts to answer one intelligent question and speak to people affected by the issues explored. Like artificial intelligence. In this episode of LSE IQ which aired in early May, producer Anna Bevan sets out to find out the environmental costs of AI. This episode was produced and edited by Anna Bevan, with script development from Sophie Mallet and on location sound recording from Oliver Johnson. Mixing help for this episode for The Conversation from Eloise Stevens. Subscribe to LSE IQ here.

Scientists can get animals to do the strangest things. They’ve taught goldfish to drive cars, primates to perform calculations with Arabic numerals and giraffes to do statistical reasoning. But what’s the point?In this episode, biologist Scarlett Howard from Monash University in Australia – who has taught bees to tell the difference between odd and even numbers – defends the importance of these seemingly ecologically irrelevant experiments.She argues that they can help us understand the secrets of animal cognition, and even potentially unlock future technological developments for humanity too.This episode was written and produced by Katie Flood. The host and executive producer is Gemma Ware. Sound design and mixing by Eloise Stevens and theme music by Neeta Sarl. Read the full credits for this episode and sign up here for a free daily newsletter from The Conversation.If you like the show, please consider donating to The Conversation, an independent, not-for-profit news organisation.

Countries around the world are meeting in Geneva in August to negotiate a global plastics treaty aimed at curbing plastic pollution. The last round of negotiations failed last November after oil-producing countries refused to sign up to a clause calling for the world to reduce its production of plastics.  But how did the world become hooked on plastic in the first place? This week, we're re-running an episode we first aired in January 2025 featuring an interview with Mark Miodownik, professor of materials and society, at UCL in the UK. He explains the history of plastic, how it’s shaped our lives, and what can be done to make sure more plastic is recycled and less ends up polluting the planet.This episode was written and produced by Katie Flood and Gemma Ware with assistance from Mend Mariwany. Sound design and mixing by Michelle Macklem and Eloise Stevens and theme music by Neeta Sarl. Read the full credits for this episode and sign up here for a free daily newsletter from The Conversation.If you like the show, please consider donating to The Conversation, an independent, not-for-profit news organisation.

Donald Trump is suing Rupert Murdoch, alongside the Wall Street Journal and Dow Jones and others, for libel after the Journal published an article alleging that Trump once wrote a “bawdy” birthday letter to the convicted sex offender, the late Jeffrey Epstein. Trump is seeking US$10 billion in damages. Trump and Murdoch have a transactional friendship that goes back decades. Despite past tensions, this rupture is something new in a relationship that has continued to serve both men’s interests.In this episode, professor of journalism Andrew Dodd at the University of Melbourne takes us back to where their relationship began in 1970s New York, to understand how Murdoch helped to build brand Trump.This episode was written and produced by Mend Mariwany and Gemma Ware with editing help from Ashlynne McGhee. Sound design and mixing by Eloise Stevens and theme music by Neeta Sarl. Read the full credits for this episode and sign up here for a free daily newsletter from The Conversation.If you like the show, please consider donating to The Conversation, an independent, not-for-profit news organisation.

Israel has never officially confirmed or denied having nuclear weapons and has never signed the nuclear non-proliferation treaty. Instead, even as evidence has emerged about its nuclear capabilities, Israel has maintained a policy of nuclear ambiguity.The origins of this opacity lie in a secret deal forged in a one-on-one meeting between Israeli prime minister, Golda Meir, and the US president, Richard Nixon, at the White House in September 1969.In this episode, we speak to Avner Cohen, professor of non-proliferation studies at the Middlebury Institute of International Studies at Monterrey in the US, about that 1969 deal and why it has endured for more than 50 years. This episode was written and produced by Mend Mariwany and Gemma Ware with assistance from Katie Flood and Ashlynne McGhee. Sound design and mixing by Eloise Stevens and theme music by Neeta Sarl. Read the full credits for this episode and sign up here for a free daily newsletter from The Conversation.If you like the show, please consider donating to The Conversation, an independent, not-for-profit news organisation.

The majority of the world’s rechargeable batteries are now made using lithium-ion. Most rely on a combination of different rare earth metals such as cobalt or nickel for their electrodes. But around the world, teams of researchers are looking for alternative – and more sustainable – materials to build the batteries of the future.In this episode, we speak to four battery experts who are testing a variety of potential battery materials about the promises they may offer.Featuring Laurence Hardwick from the University of Liverpool, Robert Armstrong from the University of St Andrew's, Ulugbek Azimov from Northumbria University and Bill Yen from Stanford University. Applications are now open for early career researchers to submit their projects for the Prototypes for Humanity 2025 awards and showcase in Dubai.This episode was written and produced by Gemma Ware with assistance from Mend Mariwany and Katie Flood. Sound design and mixing by Eloise Stevens and theme music by Neeta Sarl. Read the full credits for this episode and sign up here for a free daily newsletter from The Conversation.If you like the show, please consider donating to The Conversation, an independent, not-for-profit news organisation.

 Across Europe, far-right movements are gaining ground. By normalising nationalist rhetoric and challenging democratic institutions, these parties raise comparisons with former periods of fascism on the continent. Between 1943 and 1945, when Nazi forces occupied northern Italy, ordinary people in towns and villages across the country took up arms against fascism in one of Europe’s largest resistance movements. Now, 80 years later, in many of these same towns, anti-fascist sentiment remains unusually strong. In this episode, we speak to political scientist Juan Masullo at Leiden University, who’s been finding out about the enduring legacy of these partisan movements. This episode was hosted by Gemma Ware and written and produced by Mend Mariwany. Sound design and mixing by Eloise Stevens and theme music by Neeta Sarl. Read the full credits for this episode and sign up here for a free daily newsletter from The Conversation.If you like the show, please consider donating to The Conversation, an independent, not-for-profit news organisation.

The language from European leaders was fawning and obsequious. At one point, the head of Nato, Mark Rutte, even called Donald Trump “daddy”. But when the US president left the Nato summit in late June, there was a sigh of relief that he had not made any more angry criticism of the alliance. And after months of American pressure, Nato members agreed to increase their spending on defence to 5% of GDP by 2035.  So how did Europe become so unable to defend itself that it was forced to resort to outright flattery of an American president?In this episode, we report from the recent Siena Conference on the Europe of the Future in Italy about how the EU dropped the ball on its own defence and what its options are now. Featuring Ana E. Juncos, professor of European politics and the University of Bristol in the UK, Francesco Grillo, academic fellow at Bocconi University in Italy, and François Lafond, former assistant professor at  Sciences Po University in France and a former advisor to the Western Balkans.This episode was written and produced by Gemma Ware with assistance from Katie Flood and Mend Mariwany. Sound design and mixing by Eloise Stevens and theme music by Neeta Sarl. Read the full credits for this episode and sign up here for a free daily newsletter from The Conversation.If you like the show, please consider donating to The Conversation, an independent, not-for-profit news organisation.

Robert F Kennedy Jr caused controversy in April by promising to find a cause for autism by September. Claims by the new US secretary for health and human services that autism is a “preventable disease” with an environmental cause,  contradict a body of research that suggests autism is caused by a combination of genetic and external factors.The US government announced that to support its new research effort into autism it would build a “data platform” involving data on claims, medical records and consumer wearables.  In this episode of The Conversation Weekly podcast, we speak to Amy Gaeta, a  research associate at University of Cambridge in the UK who studies disability surveillance. Gaeta talks us through some of the strategies people are using to avoid potential surveillance, from self-diagnosis, to withholding information or being careful with the language they use to describe themselves. This episode was written and produced by Katie Flood. Gemma Ware is the executive producer. Sound design and mixing by Eloise Stevens and theme music by Neeta Sarl. Read the full credits for this episode and sign up here for a free daily newsletter from The Conversation.If you like the show, please consider donating to The Conversation, an independent, not-for-profit news organisation.

Faced with the choice in their daily lives, their work or their politics, why do some people decide to keep quiet, to censor themselves in anticipatory obedience, even if they’re not ordered to do so? In this episode we talk to self-censorship expert Daniel Bar-Tal at Tel Aviv University about what drives people to censor themselves, and its consequences for society.This episode was written and produced by Katie Flood with assistance from Mend Mariwany. Gemma Ware is the executive producer. Sound design and mixing by Eloise Stevens and theme music by Neeta Sarl. Read the full credits for this episode and sign up here for a free daily newsletter from The Conversation.If you like the show, please consider donating to The Conversation, an independent, not-for-profit news organisation.

As Jaws marks its 50th anniversary, sharks continue to get a bad rap. Film after film portrays them as terrifying hunters, the bane of surfers and swimmers. But in Indonesia, sharks are the hunted. It’s the world’s largest shark-fishing nation, with more species of sharks found in Indonesian waters than in any other country.So Indonesia was the ideal place for conservation scientist Hollie Booth at the University of Oxford to test out a new idea: would paying fishermen to release any sharks and rays caught accidentally in their nets help to keep more alive? Listen to Booth and her colleague M. Said Ramdlan in Indonesia discuss the unintended consequences of the incentive programme. This episode was written and produced by Gemma Ware with assistance from Katie Flood and Mend Mariwany. Sound design and mixing by Eloise Stevens and theme music by Neeta Sarl. Read the full credits for this episode and sign up here for a free daily newsletter from The Conversation.If you like the show, please consider donating to The Conversation, an independent, not-for-profit news organisation.

In October 2021, 136 countries agreed to establish new tax rules requiring large multinational companies to pay at least 15% in corporate tax. Nearly four years later, this ambitious agreement is finally being implemented around the world, but its success faces big challenges.In the second part of The 15% solution, we examine progress towards implementing the Organisation for Economic Cooperation and Development's global tax framework. Featuring Martin Hearson, a research fellow at the Institute of Development Studies in the UK. This episode of The Conversation Weekly was written and produced by Mend Mariwany. Gemma Ware is the executive producer. Mixing and sound design by Eloise Stevens and theme music by Neeta Sarl. Sound design and mixing by Eloise Stevens and theme music by Neeta Sarl. Read the full credits for this episode and sign up here for a free daily newsletter from The Conversation.If you like the show, please consider donating to The Conversation, an independent, not-for-profit news organisation. Donation

For decades, multinational corporations have used sophisticated strategies to shift profits away from where they do business. As a result, countries around the world lose an estimated US$500 billion annually in unpaid taxes, with developing nations hit particularly hard.In the first episode of The 15% solution, we explore how companies have exploited loopholes in the global tax system. We speak to Annette Alstadsæter, director of the Centre for Tax Research at the Norwegian University of Life Sciences, and Tarcisio Diniz Magalhaes, a professor of tax law at the University of Antwerp in Belgium. In 2021, after years of international negotiations, the Organisation for Economic Co-operation and Development unveiled a global tax deal designed to address tax avoidance through a minimum corporate tax rate of 15%. But will this new framework actually work? And what happens when major economies refuse to participate? The 15% solution explores why a new global tax regime is needed, whether it can fix a broken system, and what’s at stake if it fails.This episode of The Conversation Weekly was written and produced by Mend Mariwany. Gemma Ware is the executive producer. Mixing and sound design by Eloise Stevens and theme music by Neeta Sarl. Sound design and mixing by Eloise Stevens and theme music by Neeta Sarl. Read the full credits for this episode and sign up here for a free daily newsletter from The Conversation.If you like the show, please consider donating to The Conversation, an independent, not-for-profit news organisation. Donation

More than two thirds of guns recovered at Mexican crime scenes originate in the U.S. For decades, Mexico has struggled with staggering levels of gun violence fuelled in large part by weapons trafficked across its northern border. Now an investigation published by The Conversation has arrived at a new estimate of the scale of this illicit gun trade between the U.S. and Mexico in 2022: 135,000 guns. Investigative journalist Sean Campbell and Topher McDougal, a professor of economic development at the University of San Diego, spent a year combing through multiple databases and court documents and conducting interviews to understand how the flow of guns works. Their investigation reveals where in the U.S. the guns are coming from, what impact these American guns are having in Mexico, and how difficult it is for American law enforcement agencies to prosecute those trafficking guns across the border.This episode of The Conversation Weekly was written and produced by Mend Mariwany and Gemma Ware. Mixing and sound design by Eloise Stevens and theme music by Neeta Sarl. Read the full credits for this episode and sign up here for a free daily newsletter from The Conversation.If you like the show, please consider donating to The Conversation, an independent, not-for-profit news organisation.US gun trafficking to Mexico: Independent gun shops supply the most dangerous weaponsGun trafficking from the US to Mexico: The drug connectionHere’s how we figured the number of guns illegally trafficked from the US across the border to MexicoGuns bought in the US and trafficked to Mexican drug cartels fuel violence in Mexico and the migration crisisMexican drug cartels use hundreds of thousands of guns bought from licensed US gun shops – fueling violence in Mexico, drugs in the US and migration at the border

For much of the 21st century, one theory has dominated research efforts to cure Alzheimer's disease: the amyloid hypothesis. Beta-amyloid is a protein that builds up in clumps, or plaques, in the brains of people with Alzheimer's disease and is linked to their cognitive decline.But in recent years, despite the emergence of a couple of new drugs targeting these plaques, some scientists have begun to doubt the amyloid hypothesis. Donald Weaver, a professor of chemistry at the University of Toronto in Canada, is one of them. Weaver no longer believes there will be one magic bullet found to cure Alzheimer’s disease. Instead, he advocates for a magic shotgun approach that is likely to involve multiple ways of treating the problem, including starting much earlier in a person’s life. He tells us about shifts in the understanding of Alzheimer's during his career of more than 30 years, and the theories now emerging about what might cause the disease and how to treat it. This episode was written and produced by Katie Flood with assistance from Mend Mariwany. Gemma Ware is the host and executive producer. Sound design and mixing by Eloise Stevens and theme music by Neeta Sarl. Read the full credits for this episode and sign up here for a free daily newsletter from The Conversation.If you like the show, please consider donating to The Conversation, an independent, not-for-profit news organisation.

Three months after the Trump administration made drastic cuts to its aid agency, USAID, the effects are being felt across the world, particularly in Africa. In this episode we speak to Bright Simons, an African aid expert and visiting senior fellow at ODI Global about where the decimation of US aid leaves the debate about the future of development assistance.This episode of The Conversation Weekly was written and produced by Mend Mariwany and Gemma Ware. Mixing and sound design by Eloise Stevens and theme music by Neeta Sarl. Read the full credits for this episode and sign up here for a free daily newsletter from The Conversation.If you like the show, please consider donating to The Conversation, an independent, not-for-profit news organisation.USAID’s apparent demise and the US withdrawal from WHO put millions of lives worldwide at risk and imperil US national securityUSAID: the human cost of Donald Trump’s aid freeze for a war-torn part of SudanDonation

Liverpool FC just won the English Premier League. Contributing to their 5-1 victory over Tottenham to seal the title was Mohamed Salah, the Egyptian superstar who is the league's top scorer in the 2024-5 season. We're revisiting an episode that we first ran in December 2022 about research which used Salah to demonstrate how a celebrity footballer who is openly Muslim can help to reduce Islamophobia. Salma Mousa, now an assistant professor of political science at UCLA in the US, talks to us about her research. This episode was produced and written by Gemma Ware, with sound design by Eloise Stevens. Our other producers are Mend Mariwany and Katie Flood. Our theme music is by Neeta Sarl. More details can be found in an article that accompanied the original episode.