Gesamtlänge aller Episoden: 11 days 22 hours 44 minutes
The UN attempts a global treaty on plastic, and the science of heartbreak.
Professor and presenter Chris Lintott talks about his new book, Our Accidental Universe.
Oldest forest fossils found in Somerset show how our world looked 390 million years ago.
We look at the quality of water from your kitchen tap and check out some clever bees.
Is it a solution to global emissions or a distraction? And, will people actually eat it?