Dr Giles Yeo investigates the latest diet craze and social media sensation - clean eating.
7/18 Iain Stewart explains what meteorites and asteroids are, and the danger they pose.
4/15 Scientists are uncovering a bizarre, alien world that lies 4,000 miles beneath our feet.
8/12 Investigating how placebos work, and how we could all benefit from their hidden power.
How Dr Temple Grandin’s autism gives her a unique insight into animal behaviour. (2006)
How science is helping more and more to establish the outcome of serious crimes. (1968)
The story of the men who orbited Earth on board the ill-fated Mir space station. (1998)
Examining the US fear that the Russians are ahead of them in the space race. (1981)
The discovery by physicists of a unique particle. (1964)
Horizon follows an expedition to the Andes in search of a missing plane. (2000)