How worried should you be about your BMI? 12. March 2026 (19:00) Body mass index (BMI) is used as a global standard for measuring health, but does it actually tell you anything about how healthy you are on an individual level? Carissa Wong explains the problems with this flawed tool(New Scientist)
Can species evolve fast enough to survive as the planet heats up? 12. March 2026 (19:00) The story of a wildflower that adapted to a severe drought in California raises hopes that evolution will come to the rescue of species hit by climate change, but there are limits(New Scientist)
Why drug overdose deaths have suddenly plummeted in the US 12. March 2026 (17:00) Fentanyl-related overdose deaths fell by nearly 30 per cent in the space of a year in the US, which could represent a significant turning point in the country's opioid addiction crisis(New Scientist)
Rumours of a Firefly reboot abound, but should the Serenity fly again? 12. March 2026 (12:15) Star Nathan Fillion is stoking rumours that cult western-in-space television series Firefly could be rebooted. Emily H. Wilson realises she is being toyed with – but is still praying for its return(New Scientist)
Undisclosed ads on TikTok skirt ban on profiling minors 12. March 2026 (11:15) Teenagers are being bombarded with highly targeted commercial content on TikTok, despite an EU law that prohibits profiling minors for advertising(New Scientist)
A miniature magnet rivals behemoths in strength for the first time 11. March 2026 (19:00) Strong magnets tend to be large and power-hungry, but a new design has produced a powerful magnet that fits in the palm of your hand, making it more practical and affordable(New Scientist)
King penguins are thriving in a warmer climate, but it may not last 11. March 2026 (19:00) Longer summers are allowing more king penguin chicks to bulk up and survive the winter, but the penguins' main fishing area is shifting further away as temperatures rise(New Scientist)
Maggie Aderin's dream: To walk by the footprints of Neil Armstrong 11. March 2026 (19:00) Space scientist Maggie Aderin talks telescopes, neurodiversity and being underestimated with Rowan Hooper on the New Scientist podcast, as her memoir Starchild comes out(New Scientist)
A glimpse into the rare earth riches of Greenland 11. March 2026 (19:00) Photographer Jonas Kako travelled to Greenland to explore how mining for the rare earth elements and minerals that are vital for new green technologies is impacting locals(New Scientist)
