Psycho - Season 2 Episode 1

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

Iain Stewart reveals some surprising facts about the world's most destructive and spectacular natural phenomena, from earthquakes and tsunamis to...

Series of investigative science documentaries.

Discoveries that have revolutionised our understanding of what it means to be human, allowing us to live longer, better, smarter and stronger.