The Conversation Weekly

In the second of a three-part series, Uncharted Brain: Decoding Dementia, we explore chronic traumatic encephalopathy, a form of dementia that athletes from a whole range of sports can develop. We hear about the toll it can take on family members, who are often unaware of what’s happening to their loved ones.Featuring Matthew Smith, a senior lecturer in sport and exercise psychology at the University of Winchester in the UK and Lisa McHale, director of family relations at the Concussion Legacy Foundation.The series is hosted by Paul Keaveny and Gemma Ware and was initially published via The Anthill podcast from the team at The Conversation in the UK.Uncharted Brain was produced by Tiffany Cassidy with sound design by Eloise Stevens. The executive producer is Gemma Ware. The Conversation Weekly theme music is by Neeta Sarl. Further reading:Sport-induced traumatic brain injury: families reveal the ‘hell’ of living with the conditionThe risk of concussion lurks at the Super Bowl – and in all other sportsTackling in children’s rugby must be banned to curb dementia risks

This week we're running a three-part series called Uncharted Brain: Decoding Dementia exploring new research searching for answers to how dementia works in the brain and the damage it leaves behind. The series is hosted by Paul Keaveny and Gemma Ware and was initially published via The Anthill podcast from the team at The Conversation in the UK. In the first episode, we explore how a study which began just after the end of the second world war is revealing new insights into the risk factors for Alzheimer’s disease. Featuring Marcus Richards, professor of psychology in epidemiology and Jonathan Schott, professor of neurology, both at UCL in the UK and David Ward, one of the cohort study participants. Uncharted Brain was produced by Tiffany Cassidy with sound design by Eloise Stevens. The executive producer is Gemma Ware. The Conversation Weekly theme music is by Neeta Sarl. Further reading:We’ve been studying the same people for 76 years – this is what we’ve found out about Alzheimer’s diseaseAlzheimer’s disease: surprising new theory about what might cause itNew Alzheimer’s drug slows cognitive decline – and may be available as early as next year

Momentum is growing for objects stolen during the colonial era that are now held in museums in Europe and North America to be returned to the places and communities that they were taken from. We talk to three experts about what happens to these objects once they're returned and the questions their restitution is raising about the relationship between communities and museums in Africa. Featuring John Kelechi Ugwuanyi, senior lecturer in archaeology and tourism at the University of Nigeria in Nsukka, Farai Chabata, visiting lecturer in heritage studies at the University of Zimbabwe and senior curator of ethnography for the National Museums and Monuments of Zimbabwe and Aribiah David Attoe, lecturer in philosophy at the University of Witwatersrand. 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. A transcript will be available soon. Sign up here for a free daily newsletter from The Conversation.Further readingGermany is returning Nigeria’s looted Benin Bronzes: why it’s not nearly enough3D printing is helping museums in repatriation and decolonisation efforts‘Restitution’ of looted African art just continues colonial policies - much more is at stake

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