Should we ban social media for under-16s?

A daily pill can double survival time in patients with the world’s deadliest cancer, according to the results of a clinical trial that experts are saying is a gamechanger and one of the biggest breakthroughs in decades. To find out more about how daraxonrasib works and how life-changing it could be for patients, Madeleine Finlay speaks to Prof Naureen Starling, consultant medical oncologist at the Royal Marsden hospital. Help support our independent journalism at theguardian.com/sciencepod

While many dinosaurs were wiped out when a colossal asteroid struck Earth 66m years ago, one group survived: birds. Prof Steve Brusatte, a palaeontologist at the University of Edinburgh, has written a new book, The Story of Birds, tracing the evolution of our feathered friends from their dinosaur origins. He joins science correspondent Nicola Davis to discuss how scales first became feathers, how winged dinosaurs survived the impact of the asteroid and why their extreme adaptability offers hope that birds might also make it through the current environmental crisis. Help support our independent journalism at theguardian.com/sciencepod

It’s just a week until the first whistle of the 2026 World Cup. To mark the occasion, Madeleine Finlay talks to Ian Sample about the science behind the tournament. It’s likely to be one of the hottest ever World Cups, and scientists have written to Fifa asking it to reconsider its heat mitigations for players and referees. Dr Oliver Gibson of Brunel University outlines their concerns. Also on the agenda is the huge fossil-fuel impact of the tournament, and the effect of VAR on the psychology of referees and fans. Help support our independent journalism at theguardian.com/sciencepod

Humans have been wondering why we sleep for thousands of years. Is sleep’s purpose rest and relaxation, memory consolidation or maybe cognitive processing? In the last 15 years, scientists have discovered another possible explanation – waste disposal. In 2012 neuroscientist Maiken Nedergaard’s lab discovered that the brain has its own cleaning process, the glymphatic system, which clears away unhelpful proteins and metabolic byproducts, and only switches on at night. Since that groundbreaking discovery we’ve learned more about what drives this system and, importantly, how it could be impacting dementia. To understand more, Ian Sample talks to Prof Nedergaard about how she made the original discovery and how subsequent work is building a picture of sleep as anything but a quiet and inactive state. Help support our independent journalism at theguardian.com/sciencepod

Last month at Beijing’s half marathon, a robot named Lightning beat the human world record by nearly seven minutes. It’s the latest in a string of AI-powered milestones that have got people wondering whether robots are about to enter our everyday lives, just as chatbots have. And the country leading the charge is China, where the government has pledged to invest more than £100bn in robotics over the next 20 years. To find out how robots are already entering the workforce, and what needs to happen to get them cleaning our homes and weeding our gardens, Ian Sample hears from the Guardian’s senior China correspondent, Amy Hawkins, and from Nathan Lepora, professor of robotics and AI at Bristol University, who researches how robots can achieve human-like dexterity. Help support our independent journalism at theguardian.com/sciencepod