Episode (200)
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Streams of medicines: how Switzerland cleaned up its act
Apr 10, 2025Switzerland is leading the world in purifying its water of micropollutants, a concoction of chemicals often found in bodies of water that look crystal clear. They include common medicines like antidep...
Streams of medicines: what’s hiding in the UK’s waterways?
Apr 08, 2025The UK is known for its national parks: areas of outstanding natural beauty with rolling hills and crystal-clear streams and lakes. But research has shown that England’s most protected rivers are full...
‘Parasites should get more fame’: the nominees for world’s finest invertebrate
Apr 03, 2025Invertebrates don’t get the attention lavished on cute pets or apex predators, but these unsung heroes are some of the most impressive and resilient creatures on the planet. So when the Guardian opene...
Keto: what’s the science behind the diet?
Apr 01, 2025While other diet fads come and go, the ultra low carbohydrate Keto diet seems to endure. But as scientists begin to understand how the diet works, more is also being discovered about its risks. To fin...
The rise and fall of DNA testing company 23andMe
Mar 27, 2025The genetic testing firm 23andMe has filed for bankruptcy, another twist in the story of a company that promised a pioneering approach to precision health. Now users are scrambling to delete their per...
Where do our early childhood memories go?
Mar 25, 2025It’s a mystery that has long puzzled researchers. Why can’t we remember our early childhood experiences? Freud called the phenomenon infantile amnesia, and for many years scientists have wondered whet...
What a dark energy discovery means for the fate of the universe
Mar 20, 2025Dark energy, the mysterious force powering the expansion of the universe, appears to be weakening over time, according to a major cosmological survey that has thrown the laws of modern physics into do...
A mysterious millionaire and the quest to live under the sea
Mar 18, 2025Before billionaires dreamed of setting up communities on Mars, the ocean was seen as the next frontier in human habitation. Reviving this dream is Deep, a project backed by an anonymous millionaire to...
Use it or lose it: how to sharpen your brain as you age
Mar 13, 2025Many of us believe that cognitive decline is an inevitable part of ageing, but a new study looking at how our skills change with age challenges that idea. Ian Sample talks to Ludger Wößmann, a profess...
Mars-a-lago? Did the red planet once have sandy beaches?
Mar 11, 2025The Mars we know now is arid and dusty, with punishing radiation levels. But, as science correspondent Nicola Davis tells Madeleine Finlay, two new studies add weight to the idea that billions of year...