How Google’s chatbot works – and why it isn’t sentient

For some people, going bald or experiencing thinning hair can have a significant impact on mental wellbeing and self confidence. Madeleine Finlay speaks to Rudi Zygadlo about how it affected him and what he eventually did about it, and to consultant dermatologist and hair specialist Dr Sharon Wong about what exactly is going on when our hair thins, which treatments are available to help, and what we can expect from new technologies in the pipeline. Help support our independent journalism at theguardian.com/sciencepod

Ian Sample speaks to the Guardian’s health editor, Andrew Gregory, about the worrying global rise in cancers in under-50s, and hears from Yin Cao, an associate professor in surgery and medicine at Washington University in St Louis, who is part of a team conducting a huge study into why young people are developing bowel cancer at record rates. Help support our independent journalism at theguardian.com/sciencepod

We all know the cliches about older siblings being responsible, younger ones being creative, and middle children being peacemakers. But is there any evidence our position in the family has an impact on our personality? Madeleine Finlay meets Dr Julia Rohrer, a personality psychologist at the University of Leipzig, to unpick the science behind our intuition about birth order. Help support our independent journalism at theguardian.com/sciencepod

We wanted to bring you this episode from our new series, Black Box. In it, Michael Safi explores seven stories and the thread that ties them together: artificial intelligence. In this prologue, Hannah (not her real name) has met Noah and he has changed her life for the better. So why does she have concerns about him? If you like what you hear, make sure to search and subscribe to Black Box, with new episodes every Monday and Thursday.. Help support our independent journalism at theguardian.com/sciencepod

It’s thought that about 15% of us are affected by tinnitus, and despite its potentially debilitating impact on mental health and quality of life, there isn’t any cure for the condition. Madeleine Finlay speaks to John, who has used CBT techniques to learn to live well with his tinnitus, and Dr Lucy Handscomb, a tinnitus researcher who is involved in trialling a new app that could hold promise for sufferers.. Help support our independent journalism at theguardian.com/sciencepod

Electric cars might seem like a no-brainer on a warming planet, but there are plenty of people who remain sceptical about everything from their battery life to their carbon impact and the environmental and human rights costs of their parts. Madeleine Finlay consults Auke Hoekstra, known as the internet’s ‘EV debunker in chief’, to unpick the myths, realities and grey areas surrounding electric cars. Help support our independent journalism at theguardian.com/sciencepod

A record 10,000 research papers were retracted in 2023. To find out what’s driving this trend, Ian Sample speaks to Ivan Oransky, whose organisation Retraction Watch has been monitoring the growing numbers of retractions for more than a decade, and hears from blogger Sholto David, who recently made headlines when he spotted mistakes in research from a leading US cancer institute.. Help support our independent journalism at theguardian.com/sciencepod

Social affairs correspondent Robert Booth tells Madeleine Finlay why a class of synthetic opioids called nitazenes, first developed in the 1950s, is leading to a worrying number of fatal overdoses in the UK. And she hears from toxicology and addiction specialist Dr Joseph D’Orazio about a tranquilliser called xylazine that has been showing up in alarming volumes in the US illegal drug supply and is now starting to appear in toxicology reports in the UK. Help support our independent journalism at theguardian.com/sciencepod

We all know people who find it hilarious to prod and poke, pinch and tickle, all in the name of fun. But are humans the only ones who like to tease each other? Or are other animals in on the act? Ian Sample talks to Prof Erica Cartmill about her work on apes and teasing and asks, given how annoying teasing is, why do apes, and humans, do it?. Help support our independent journalism at theguardian.com/sciencepod

Last month the British Association of Dermatologists warned that children as young as eight years old were using potentially damaging anti-ageing skin care products. Madeleine Finlay speaks to consultant dermatologist Dr Emma Wedgeworth about where this trend has come from, what damage these products might be causing to young skin and how we can all look after our skin without spending too much time and money. Help support our independent journalism at theguardian.com/sciencepod