Gesamtlänge aller Episoden: 14 days 4 hours 27 minutes
What does it mean to be a chimpanzee? And following the monarch butterfly migration.
Ben Garrod and Jess French get under the skin (and blubber) of the California sea lion.
How is the menopause viewed around the world? Claudia Hammond unpacks the latest science
Gossip and rumour can affect morale but can the science of networks explain why?
Do orangutans, or humans, experience a midlife crisis? And, why happiness is U shaped
Two couples brought together by a tragedy and a tatty piece of paper with a serial number