Daily from 7.00pm.
Programmes start at 7.00pm.
Coverage of the evening session of day four at the 2023 World Snooker Championship.
Examining the 20th century through the lives of Winston Churchill and George Orwell, who both wrote about the Depression, empire, world wars and the Cold War. Show more
Real-life detective story. Chris Packham returns to Sumatra to search for a girl from a nomadic tribe he photographed 20 years ago to discover what has happened to her jungle home. Show more
A piece of metal that defines the mass of a kilogramme has, over time, lost the equivalent of the weight of an eyelash. What are the consequences for how we measure our world? Show more
Colour: The Spectrum of Science
Episode 1: Colours of Earth
59 minutes
on BBC Four HDAvailable for years
Helen Czerski uncovers what colour is, how it works and how it has written the story of our planet. She seeks out the colours that turned the Earth multicoloured. Show more
Science series. Horizon explores why placebos work, despite containing no active ingredient, and explains how we could all benefit from their hidden power. Show more
Examining the 20th century through the lives of Winston Churchill and George Orwell, who both wrote about the Depression, empire, world wars and the Cold War. Show more
Programmes start at 7.00pm.
