The Conversation Weekly

From the US, to Brazil, to India, deepening political polarisation is used as a frame through which to see a lot of 21st century politics. But what can actually be done to depolarise deeply divided societies, particularly democracies? In this episode we speak to a political scientist and a philosopher trying to find answers to that question. Featuring Jennifer Lynn McCoy, professor of political science at Georgia State University in the US and Robert B. Talisse, professor of philosophy at Vanderbilt University in the US.This episode was produced by Mend Mariwany and Katie Flood. The executive producer is Gemma Ware. Eloise Stevens does our sound design and our theme music is by Neeta Sarl. Full credits for this episode are available here. Read a transcript of this episode. Sign up here for a free daily newsletter from The Conversation.Further reading and listening:Democratic and Republican voters both love civility – but the bipartisan appeal is partly because nobody can agree on what civility isExtreme political polarization weakens democracy – can the US avoid that fate?Brazil election: what I saw on the streets made me cautiously optimistic

Welcome to the first episode of Discovery, a new series via The Conversation Weekly where we hear the stories behind new research discoveries from around the world. In this episode, Ruth Mace, professor of anthropology at University College London in the UK, explains how her research with the families of Tibetan monks in China suggests celibacy might have some surprising evolutionary advantages. This episode was produced by Mend Mariwany, with sound design by Eloise Stevens. The executive producer was Gemma Ware. Our theme music is by Neeta Sarl. More episodes of our Discovery series will be published via The Conversation Weekly every couple of weeks. Further reading:Celibacy: its surprising evolutionary advantages – new research

Humans do a lot of different things to the environment, and there aren’t many natural processes that can rival the scale of changes brought on by human activity. In this episode, we speak to three experts who study different ways that human action – from radiation to pollution to urbanization – is affecting how plants and animals evolve, and how humanity has become the single biggest driver of evolutionary changes on Earth. Featuring Germán Orizaola, a biologist at the University of Oviedo in Spain, Andrew Whitehead, a professor of environmental toxicology at University of California, Davis in the US and Marc Johnson, a professor of biology at the University of Toronto in Canada.This episode was produced by Mend Mariwany and Daniel Merino and the executive producer is Gemma Ware. Eloise Stevens does our sound design and our theme music is by Neeta Sarl. Full credits for this episode are available here. A transcript will be available soon. Sign up here for a free daily newsletter from The Conversation.Further reading and listening:Chernobyl black frogs reveal evolution in actionRussian capture of Ukraine’s Chornobyl nuclear plant threatens future research on radioactivity and wildlifeTo avoid humans, more wildlife now work the night shift

Digital nomads who work as they travel are often attracted by a life of freedom far removed from the daily office grind. Many head to cities that have become known hotspots for remote workers. In this episode, we find out what impact digital nomads have on these cities and the people who live there, and how governments are responding to the phenomenon. Featuring Dave Cook, PhD candidate in anthropology at UCL in the UK, Adrián Hernández Cordero, head of sociology at Metropolitan Autonomous University in Mexico and Fabiola Mancinelli, assistant professor of anthropology at the University of Barcelona in Spain.This episode was produced by Mend Mariwany, with sound design by Eloise Stevens. Gemma Ware is the executive producer. Our theme music is by Neeta Sarl. Full credits for this episode are available here. Read a transcript of this episode. Sign up here for a free daily newsletter from The Conversation.Further reading and listening:As countries ranging from Indonesia to Mexico aim to attract digital nomads, locals say ‘not so fast’Digital nomads have rejected the office and now want to replace the nation state. But there is a darker side to this quest for global freedomThe great remote work experiment – what happens next? Podcast      

Soon after Jair Bolsonaro’s election as president of Brazil in 2018, he began making it a lot easier for people in the country to buy guns. In this episode, we speak to two experts about Brazil’s boom in private gun ownership and why it’s exacerbating fears about political violence ahead of a run-off presidential election on October 30. Featuring Erika Robb Larkins, associate professor of anthropology and director of the Behner Stiefel Center for Brazilian Studies at San Diego State University in the US and Juliano Cortinhas, professor of international relations at the University of Brasilia in Brazil.This episode was produced by Gemma Ware and Mend Mariwany, with sound design by Eloise Stevens. Gemma Ware is the executive producer. Our theme music is by Neeta Sarl. Full credits for this episode are available here. Read a transcript of this episode. Sign up here for a free daily newsletter from The Conversation.Further reading and listening:Brazil: inside Jair Bolsonaro’s militarised democracy – podcast Bolsonaro’s first-round election bounce back reminds us why populist leaders are so popularAnother stress test for democracy: The imminent election crisis in BrazilBrazil election: how the political violence of the country’s history has re-emerged

A new barrier to climate action is opening up in an obscure and secretive part of international trade law which fossil fuel investors are using to sue countries if policy decisions go against them. We speak to experts about the investor-state dispute settlement (ISDS) mechanism and how it works. Many are worried that these clauses in international trade deals could jeopardise global efforts to save the climate – costing countries billions of dollars in the process.Featuring Kyla Tienhaara, Canada research chair in economy and environment at Queen's University, Ontario in Canada, Emilia Onyema, reader in international commercial Law at SOAS, University of London in the UK, Lea Di Salvatore, PhD researcher at the University of Nottingham in the UK and Maria-Rita D'Orsogna, anti-oil activist and professor of mathematics at California State University, Northridge in the US.This episode was produced by Gemma Ware and Mend Mariwany, with sound design by Eloise Stevens. Gemma Ware is the executive producer. Our theme music is by Neeta Sarl. Full credits for this episode are available here. A transcript is also available. Sign up here for a free daily newsletter from The Conversation.Further reading:How treaties protecting fossil fuel investors could jeopardize global efforts to save the climate – and cost countries billionsEnergy charter treaty makes climate action nearly illegal in 52 countries – so how can we leave it?British investors could sue Australia over climate action if UK joins trans-Pacific trade pact

As research into psychedelics and their medical uses makes a comeback, scientists are having to deal with the legacy – both scientific and social – of a 40-year near total freeze on psychedelic research. In this episode, we speak with three experts about the early rise and fall of psychedelics in western science and culture, how the mystical and often vague language of the 60s and 70s still pervades research today and what it’s like to actually run clinical trials using psilocybin.Featuring Robin Carhart-Harris at the University of California, San Francisco in the US; Wayne Hall, at the University of Queensland in Australia; and Josjan Zijlmans at Vrije Universiteit Amsterdam in the Netherlands.This episode was produced by Mend Mariwany, with sound design by Eloise Stevens. Gemma Ware is the executive producer. Our theme music is by Neeta Sarl. Full credits for this episode are available here. A transcript is also available. Sign up here for a free daily newsletter from The Conversation.Further reading:Psychedelic drugs: how to tell good research from badAI maps psychedelic ‘trip’ experiences to regions of the brain – opening new route to psychiatric treatmentsPsychedelics: how they act on the brain to relieve depression

The Thwaites Glacier in Antarctica is one of many bodies of ice that are melting, but this massive glacier is uniquely important when it comes to sea level rise. In this episode we talk to three experts studying the glacier in Antarctica to find out what's happening and why it's so significant.Featuring Yixi Zheng, a PhD candidate in Oceanography at the University of East Anglia in the UK, Ted Scambos, a senior research scientist at the University of Colorado Boulder and Paul Holland, an ocean and ice scientist at the British Antarctic Survey.This episode was produced by Mend Mariwany, with sound design by Eloise Stevens. Gemma Ware is the executive producer. Our theme music is by Neeta Sarl. Full credits for this episode are available here. A transcript is also available. Sign up here for a free daily newsletter from The Conversation.Further reading:Ice world: Antarctica’s riskiest glacier is under assault from below and losing its gripAntarctica’s ‘doomsday’ glacier: how its collapse could trigger global floods and swallow islandsIce shelves hold back Antarctica’s glaciers from adding to sea levels – but they’re crumbling

For thousands of years, people living in parts of the world used to high temperatures have deployed traditional passive cooling techniques in the way they design their buildings. But "modern" styles of architecture using concrete and glass often usurped local building techniques better suited to hotter climates. In this episode, we explore why that happened, and how some architects are championing traditional techniques to help keep buildings cool.Featuring Anthony Ogbuokiri, senior lecturer in architectural design at Nottingham Trent University in the UK, Vyta Pivo, assistant professor of architecture at the University of Michigan in the US and Susan Abed Hassan, professor of architectural engineering at Al-Nahrain University in Baghdad, Iraq.This episode was produced by Mend Mariwany, with sound design by Eloise Stevens. Gemma Ware is the executive producer. Our theme music is by Neeta Sarl. Full credits for this episode are available here. A transcript is available here. Sign up here for a free daily newsletter from The Conversation.Further reading:Cities like Lagos need building designs that don’t just copy global stylesTiny algae could help fix concrete’s dirty little climate secret – 4 innovative ways to clean up this notoriously hard to decarbonize industryHow to keep buildings cool without air conditioning – according to an expert in sustainable design

M was a double agent during the cold war, working on the side of the west. But when the Iron Curtain fell, he felt abandoned by the secret services he risked his life for. M's story is told by Eleni Braat, associate professor of international history at Utrecht University and Ben de Jong, research fellow at Leiden University. They've been interviewing him in depth for their research on what happens to spies when their secret service days come to an end. This episode of The Conversation Weekly was produced by Gemma Ware and Mend Mariwany. Sound design is by Eloise Stevens and our theme music is by Neeta Sarl. Full credits for this episode are available here. Further reading:John Le Carré: authentic spy fiction that wrote the wrongs of post-war British intelligenceHow ordinary people are convinced to become spiesRevealed: the panic that followed the defection of the Cambridge spies