17/19 Do multiple universes exist? And if so, which one are we actually in?
7/15 Adam Rutherford meets a new creature created by American scientists - the spider-goat.
16/19 A look at people living with OCD, the therapy available and what neuroscience can offer.
15/19 Horizon reveals our new findings on the very first Britons.
14/19 Michael Mosley subjects himself to a battery of health tests.
12/12 Physicist Dr Helen Czerski and meteorologist John Hammond make sense of Britain's weather.
13/19 Horizon reveals the scale of the problem of space junk, with accounts from experts.
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)