Catalyst - Season 15 Episode 21

TV's most-watched history series brings to life the compelling stories from our past that inform our understanding of the world today.

Hannah Fry takes a spectacular look at the science of size by imagining a parallel world in which everything is made bigger or smaller.

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...

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

Get set for It’s Not Rocket Science, a brand new entertainment series that celebrates science and the world around us through thrilling,...