Guardian

Studies detecting microplastics throughout human bodies have made for alarming reading in recent years. But last week, the Guardian’s environment editor, Damian Carrington, reported on major doubts among a group of scientists about how some of this research has been conducted. Damian tells Ian Sample how he first heard about the concerns, why the scientists think the discoveries are probably the result of contamination and false positives, and where it leaves the field. He also reflects on how we should now think about our exposure to microplastics. Help support our independent journalism at theguardian.com/sciencepod

Leader of the Green party, Zack Polanski, tells Pippa and Kiran that Nato is over and the UK should consider expelling the US from British military bases. Plus he explains why he isn’t worried about billionaires leaving the country. Help support our independent journalism at theguardian.com/politicspod

Keir Starmer has held an emergency press conference in response to Donald Trump’s tariff threats over Greenland. Pippa and Kiran discuss what the UK prime minister said and how it may be received. Help support our independent journalism at theguardian.com/politicspod

Max Rushden is joined by Barry Glendenning, Seb Hutchinson, John Brewin and Osasu Obayiuwana to discuss the Manchester derby and extraordinary scenes at the Afcon final. Help support our independent journalism at theguardian.com/footballweeklypod

Sacked, suspended and the whip removed – Kemi Badenoch announced in spectacular fashion that Robert Jenrick was booted out of the Tory party for plotting to defect. John Harris and Kiran talk about how this will play out. Help support our independent journalism at theguardian.com/politicspod

Max Rushden is joined by Barry Glendenning, Philippe Auclair, Dan Bardell and Sid Lowe as Xabi Alonso leaves Real Madrid and the Carabao Cup semi-finals begin. Help support our independent journalism at theguardian.com/footballweeklypod

Ian Sample puts listeners’ questions on dreams and nightmares to Dr Michelle Carr, director of the Dream Engineering Laboratory in Montreal’s Centre for Advanced Research in Sleep Medicine, and author of the new book Into the Dream Lab. They look at why we dream, what we can learn by examining our dreams, and what we can do when dreams turn to nightmares. Dr Carr gives her top tips for taking charge of our dreams and trying to influence their content. Help support our independent journalism at theguardian.com/sciencepod

Max Rushden is joined by Barry Glendenning, Jonathan Wilson and Osasu Obayiuwana as the Africa Cup of Nations reaches its last four. Help support our independent journalism at theguardian.com/footballweeklypod

Ian Sample puts listeners’ questions on sleep to Dr Allie Hare, consultant physician in respiratory and sleep medicine at Guy’s and St Thomas’ hospitals and president of the British Sleep Society. They cover why women experience sleep disturbance during the menopause, why sleep paralysis affects some people more than others, and what scientists know about the link between sleep and dementia. Hare also gives her top tips for getting better sleep in 2026. Help support our independent journalism at theguardian.com/sciencepod

Ofcom has launched an investigation into X over its AI tool Grok – but what does it mean when the platform is widely used by the government? Plus, Pippa and Kiran discuss Nadhim Zahawi’s defection to Reform UK, and why it could both help and hinder the party. Help support our independent journalism at theguardian.com/politicspod