Madeleine Finlay speaks to the Guardian’s architecture and design critic, Oliver Wainwright, about why the relatively obscure concept of the 15-minute city has become a magnet for conspiracy theories in recent weeks. And hears from Dr Richard Dunning about how the theory can be implemented in a way that’s fair to all residents. Help support our independent journalism at theguardian.com/sciencepod

Ian Sample speaks to Guardian science correspondent Nicola Davis about the news that Wegovy, an appetite suppressant popular with celebrities in the US, will soon be sold at UK pharmacies. It’s a prescription drug aimed at helping people with obesity lose weight, but some argue it doesn’t tackle the root cause of the disease. Help support our independent journalism at theguardian.com/sciencepod

According to new research by the children’s commissioner for England, one in 10 children have watched pornography by the time they are nine years old. And teachers say the effects are being felt in schools. So what makes young people vulnerable to this kind of content, and what impact might it have on their brains and behaviour? Madeleine Finlay speaks to Guardian education correspondent Sally Weale, and to consultant child and adolescent psychiatrist Dr Dickon Bevington. Help support our independent journalism at theguardian.com/sciencepod

Climate change and pollution are the latest factors contributing to a global rise in antibiotic-resistant superbugs, according to a report from the UN environment agency. Given that no new class of antibiotics has been discovered since the 1980s, what are our best hopes for tackling these bugs in the future? Ian Sample speaks to the Guardian’s science correspondent Hannah Devlin about genetically modified bacteria, the potential of plant toxins, and why scientists are hunting for viruses known as ‘bacteriophages’ in birdbaths and sewers. Help support our independent journalism at theguardian.com/sciencepod

Companies selling private blood tests offer customers a way to check their health – from measuring cholesterol levels to thyroid hormones – from the comfort of their home. But what happens if there’s an abnormal result? Madeleine Finlay speaks to health journalist Emma Wilkinson and consultant chemical pathologist Dr Bernie Croal about how these tests work, how to interpret your results and whether an already overstretched NHS is being left to deal with the worried well. Help support our independent journalism at theguardian.com/sciencepod

As we approach the anniversary of Russia’s invasion of Ukraine, Ian Sample talks to physicist Prof John Ellis, and Arctic governance expert Svein Vigeland Rottem, about how the world of science has had to adapt. Help support our independent journalism at theguardian.com/sciencepod

This week the government published a major environmental improvement plan for England. It has pledged that every household will be within a 15-minute walk of green space or water, the restoration of 1.2m acres of wildlife habitat, and that sewage spills will be tackled with upgrades to wastewater treatment works. Madeleine Finlay speaks to the Guardian’s environment editor, Fiona Harvey, about the state of nature in the UK, what this plan promises to do, and whether it’s ambitious enough to halt and reverse damage done.. Help support our independent journalism at theguardian.com/sciencepod

This week star gazers will be hoping to catch sight of an exotic green comet that last passed by Earth 50,000 years ago. But, unlike the view our Neanderthal ancestors would have had, light pollution will make witnessing this celestial event an impossibility for many. Ian Sample speaks to astronomy journalist Dr Stuart Clark about how best to see the comet, and why it’s time to rethink our relationship with the night sky. Help support our independent journalism at theguardian.com/sciencepod

ChatGPT has been causing a stir since its launch last year. The chatbot’s ability to produce convincing essays, stories and even song lyrics has impressed users, and this week attracted a multibillion-dollar investment from Microsoft. Ian Sample speaks to Prof John Naughton about how ChatGPT works, hears from author Patrick Jackson about how it will change publishing, and asks where the technology could end up. Help support our independent journalism at theguardian.com/sciencepod

Last week, New Zealand’s prime minister Jacinda Ardern announced her resignation, saying that she “no longer had enough in the tank” to do the role justice. Madeleine Finlay speaks to cognitive scientist Prof Laurie Santos about the symptoms of burnout, what causes it and the best ways to recover. Help support our independent journalism at theguardian.com/sciencepod