First broadcast: on BBC Four HDLatest broadcast: on BBC Four
Prof Sophie Scott uses hissing cockroaches, chirping crickets and rumbling elephants to explore how humans and animals have evolved to use sound to send messages. Show more
First broadcast: on BBC Four HDLatest broadcast: on BBC Four HD
Dr Tara Shine takes a deep breath and explores the gases that make up the air we breath. One of them might provide the answer for heating and transport in the future. Show more
Laura examines Boris Johnson’s relationship with the truth and his downfall. And when Liz Truss wreaks economic and political havoc, the Tories remove a second PM in 45 days. Show more