Crash Course History of Science - Season 1 Episode 4 4. Atala

This ground-breaking two-part series takes us inside two of the most amazing structures in the natural world: our hands and feet.

Chris Jackson, Xand Van Tulleken and Aldo Kane take part in an extraordinary expedition to one of the world's most dangerous, spectacular and least...

Kate Humble joins a team of geologists at the Vanuatu archipelago to investigate some of the most active volcanoes in the world - and to predict if...

A groundbreaking expedition to the Arctic investigates the unknown world of icebergs, exploring the creation, life and death of these frozen...

Nowhere else in the world is so regularly ravaged by infernos of the intensity, scale and destructive force of the Australian bushfire. As our...

Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.