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The Conversation

A show for curious minds. Join us each week as academic experts tell us about the fascinating discoveries they're making to understand the world, and the big questions they’re still trying to answer. A podcast from The Conversation hosted by Gemma Ware.

The Conversation Weekly

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.

How the world got hooked on plastic

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.

How Rupert Murdoch helped to build brand Trump

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.

Israel’s secret deal to build a nuclear arsenal

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.

What will batteries of the future be made of?

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.

An enduring anti-fascist legacy in Italy

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.

How Europe dropped the ball on its own defence

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.

Autism, RFK Jr and avoiding disability surveillance

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.

Self-censorship and what drives it

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.

Cash for releasing sharks has a catch

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

How Rupert Murdoch helped to build brand Trump

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