The Conversation Weekly

In countries across Africa and Latin America, old used cars from places like the U.S. and Europe provide vital access to transportation to people who would otherwise be unable to afford their own vehicles. While this process extends the lives of these cars, the practice is not without problems, in particular with regards to pollution and passenger safety. We speak with two researchers about why richer countries export used cars, what impacts they have in developing nations and whether import restrictions are effectively stemming the rise in pollution and accidents caused by this practice.Featuring Festival Godwin Boateng, Postdoctoral Research Fellow at the Centre for Sustainable Urban Development at The Earth Institute at Columbia University in the US, and Paul Bledsoe, Professional Lecturer at American University in the US.This episode was written and produced by Mend Mariwany, who is also the executive producer of The Conversation Weekly. 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: Ghana wants fewer polluting old cars on the road. But it’s going about it the wrong wayStandard responses to road accidents haven’t worked in Ghana: here are some alternativesNairobi’s new expressway may ease traffic woes – but mostly for the wealthy

Last month the United Nations’ Intergovernmental Panel on Climate Change (IPCC) released its Synthesis Report of the Sixth Assessment Report. It showed global temperatures are now 1.1℃ above pre-industrial levels. This warming has driven widespread and rapid global changes, including more frequent and intense weather extremes that are now impacting people and ecosystems all over the world. But when an extreme weather event hits, how certain can we be that it was made more likely by climate change? How do we know it wasn’t just a rare, naturally-occuring event that might have happened anyway?Fear & Wonder is a new podcast from The Conversation that takes you inside the UN’s era-defining climate report via the hearts and minds of the scientists who wrote it. In this episode, we’re delving into one of the major shifts in the public communication of climate change – the attribution of extreme weather events to climate change.Featuring Dr Friederike Otto, Senior Lecturer in Climate Science at the Grantham Institute at Imperial College London in the UK, David Karoly honorary Professor at the University of Melbourne in Australia, and Tannecia Stephenson, Physics Professor at the University of the West Indies, Jamaica. Fear and Wonder is produced by Michael Green and is sponsored by the Climate Council, an independent, evidence-based organisation working on climate science, impacts and solutions.Further reading: Have climate change predictions matched reality?Is climate change to blame for extreme weather events? Attribution science says yes, for some – here’s how it works

Conserving or protecting natural resources, like landscapes or products, can involve limiting people's access or use. When natural resources are connected to cultural, religious or spiritual practices, conservation needs to consider both biological and cultural diversity. Indian or red sandalwood, highly valued for its wood and oil, is a natural resource with significant economic and cultural value. The fragrant wood is used for carvings, furniture and in buildings, while the oil distilled from its heartwood has perfume, incense and medicinal applications. We speak with a chemist, an environmental historian and an environment and society researcher on why cultural preservation is key to the sustainable management of natural resources like sandalwood.Featuring Danny Hettiarachchi, chemist and adjunct research fellow at the University of Western Australia, Ezra Rashkow, an environmental and South Asian historian at Montclair State University in the US,, and Jules Pretty, professor of environment and society at the University of Essex in the UK. This episode of The Conversation Weekly was produced and written by Nehal El-Hadi and Mend Mariwany, who is also the show’s executive producer. Sound design is by Eloise Stevens, and our theme music is by Neeta Sarl. Full credits for this episode are available here. Sign up here for a free daily newsletter from The Conversation.Further reading: Loved to death: Australian sandalwood is facing extinction in the wildHanding power to fishers could lead to more sustainable fishingWhy haven’t Madagascar’s famed lemurs been saved yet?

We speak with three researchers who study how climate research is funded to find out whether the pomp and circumstance of high-profile climate innovation prizes outweighs the actual research they fund, or whether they actually play an important role in the larger effort to find climate solutions.Featuring David Reiner, University Senior Lecturer in Technology Policy at the Cambridge Judge Business School; Abbas Abdul, Researcher at the Science Policy Research Unit at the University of Sussex; and Mark Maslin, professor of Earth System Science at University College London.This episode was written and produced by Katie Flood. The executive producer is Mend Mariwany. 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: Earthshot prize: five winners that will help solve major environmental problemsLongitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time

In an era of ceaseless notifications from apps, devices and social media platforms, as well as access to more information than we could possibly consider, how do we find ways to manage? And is the way that we think, focus and process information changing as a result? We speak with three researchers who study human-computer interaction, technology design and literacy about how all of these demands on our attention are affecting us, and what we could possibly do about it.Featuring Maryanne Wolf, director of the Center for Dyslexia, Diverse Learners, and Social Justice at the University of California, in the United States, Kai Lukoff, assistant professor at Santa Clara University, US, and Daniel Le Roux, a senior lecturer at Stellenbosch University in South Africa.This episode of The Conversation Weekly was produced and written by Mend Mariwany, who is also the show’s executive producer. Sound design is by Eloise Stevens, and our theme music is by Neeta Sarl. Full credits for this episode are available here. Sign up here for a free daily newsletter from The Conversation.Further reading: Ping, your pizza is on its way. Ping, please rate the driver. Yes, constant notifications really do tax your brainCan reading help heal us and process our emotions – or is that just a story we tell ourselves?There are challenges but also potential benefits of digital distractionsTo navigate the dangers of the web, you need critical thinking – but also critical ignoring

Both the U.S. and China have plans to establish a permanent human presence on the Moon. You might be wondering: why now? The answer to that is the relatively recent discovery of water on the Moon. The question of how humanity will establish a Moon base is perhaps a deeper and more important one. We speak with two people, a planetary scientist who studies lunar geology and a scholar who works on space law and politics, about the challenges facing nations as humanity heads to the Moon.Featuring Mahesh Anand, Professor of Planetary Science and Exploration at The Open University in the UK, and Michelle L.D. Hanlon, Professor of Air and Space Law at the University of Mississippi in the US.This episode was written by Katie Flood and produced by Dan Merino and Katie Flood. The executive producer is Mend Mariwany. 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: Lunar mining and Moon land claims fall into a gray area of international law, but negotiations are underway to avoid conflict and damage to spacecraftSpace law hasn’t been changed since 1967 – but the UN aims to update laws and keep space peacefulWater on the Moon: research unveils its type and abundance – boosting exploration plansIf you like The Conversation Weekly, we encourage you to check out two limited series podcasts produced by The Conversation: Fear & Wonder and Great Mysteries of Physics. Available on Apple, Spotify, or wherever you like to listen to your podcasts.

On March 19, 2003, the United States led an unlawful invasion into Iraq, occupying the country for over eight years until the official withdrawal of troops throughout 2011. It is estimated that around 405,000 deaths occurred as a direct result. Most of these deaths were of Iraqi civilians, hundreds of thousands of others were injured, and over nine million displaced. The invasion was followed by the rise of sectarian violence that followed between 2006 and 2010, and the Islamic State group’s occupation in parts of the country from 2013-17. We speak to two researchers who examine the impact the invasion and conflict have had on the lives of Iraqis.Featuring Sana Murrani, associate professor in spatial practice with a background in architecture and urban design at the University of Plymouth, UK, and Inna Rudolf, senior research fellow at the International Centre for the Study of Radicalisation and a postdoctoral research fellow at the Centre for the Study of Divided Societies, King's College London in the UK. This episode of The Conversation Weekly was produced and written by Mend Mariwany, who is also the show’s executive producer. Sound design is by Eloise Stevens, and our theme music is by Neeta Sarl. Full credits for this episode are available here. Sign up here for a free daily newsletter from The Conversation.Further reading: It’s been 20 years since the US invaded Iraq – long enough for my undergraduate students to see it as a relic of the pastYoung people in the Middle East struggle to see a promising futureIraq food protests against spiralling prices echo early stages of the Arab Spring

Without a sense of time, leading us from cradle to grave, our lives would make little sense. But on the most fundamental level, physicists aren't sure whether the sort of time we experience exists at all. We talk to three experts and find out if time could potentially be moving backwards as well as forwards. Featuring Sean Carroll, Homewood professor of natural philosophy at Johns Hopkins University, Emily Adlam, postdoctoral associate of the philosophy of physics at Western University and Natalia Ares, Royal Society university research fellow at the University of Oxford.This episode was presented by Miriam Frankel and produced by Hannah Fisher. Executive producers are Jo Adetunji and Gemma Ware. Social media and platform production by Alice Mason, sound design by Eloise Stevens and music by Neeta Sarl. A transcript is available here. Sign up here for a free daily newsletter from The Conversation.Further reading: Quantum mechanics: how the future might influence the pastFour misconceptions about quantum physics

When ChatGPT burst onto the technology world in November 2022, it gained 100 million users within just two months after its launch. The technology itself is fascinating, but part of what makes ChatGPT uniquely interesting is the fact that essentially overnight, most of the world gained access to a powerful generative artificial intelligence that they could use for their own purposes. We speak with researchers who study computer science, technology and economics to explore how the rapid adoption of technologies has, for the most part, failed to change social and economic systems in the past – but why AI might be different, despite its weaknesses.Featuring Daniel Acuña, Associate Professor of Computer Science, at the University of Colorado Boulder in the US, Kentaro Toyama, Professor of Community Information at the University of Michigan, also in the US, and Thierry Rayna, Professor of Innovation and Entrepeneurship Management, École polytechnique in France. This episode of The Conversation Weekly was produced by Katie Flood and Dan Merino, and also written by Katie Flood. Sound design is by Eloise Stevens, and our theme music is by Neeta Sarl. Mend Mariwany is the show's executive producer. Full credits for this episode are available here. Sign up here for a free daily newsletter from The Conversation.Further reading: AI could make more work for us, instead of simplifying our livesUnlike with academics and reporters, you can’t check when ChatGPT’s telling the truthI tried the Replika AI companion and can see why users are falling hard. The app raises serious ethical questions

An international team of biologists has discovered a tiny new species of owl, called the Príncipe scops owl, living in a remote forest on an island off the west coast of Africa.Featuring Bárbara Freitas, a Ph.D. fellow who studies bird evolution at the National Museum of Natural Sciences in Madrid.This episode was written and produced by Katie Flood and hosted by Dan Merino. The interim executive producer is Mend Mariwany. Eloise Stevens does our sound design, and our theme music is by Neeta Sarl.Full credits for this episode are available here. Sign up here for a free daily newsletter from The Conversation.Further reading: We discovered a new species of owl – but we already think it’s in dangerMini creatures with mighty voices know their audience and focus on a single frequency