Back up to: Horizon
There will be 17 episodes. More information coming soon
17/17 Michael Portillo investigates what makes ordinary people commit acts of violence.
16/17 Alan Davies embarks on a maths odyssey with the help of mathematician Marcus du Sautoy.
15/17 Why hasn't science worked out how to predict when and where the next quake will happen?
13/17 Horizon has gathered a team of experts to produce the ultimate guide to disaster survival.
11/17 Exploring the secret world of the biological clock.
10/17 Professor Brian Cox journeys in search of the energy source of the future, nuclear fusion.
9/17 A scientific investigation into the meaning of dreams, drawing on personal testimony.
8/17 Father of two David Baddiel investigates how best to educate your child.
8/17 Can cannabis cause schizophrenia? Is it addictive? Or is it an undervalued medicine?
7/17 Featuring an experiment that aims to reveal why it is hard for some people to gain weight.
6/17 Horizon reveals that nakedness may hold the key to the success of the human species.
4/17 Particle physicist Professor Brian Cox looks into the complicated subject of time.
We are in the grip of an allergy epidemic. Horizon attempts to explain why this may be.
Jimmy Doherty is on a mission to find out if GM crops really can feed the world.
Two-part special in which Horizon considers where the line between sanity and madness lies
Some of the world's leading scientists share some crucial words of advice.