In 1957 Britain detonated its first megaton hydrogen bomb - code-named Operation Grapple X. It was the culmination of an extraordinary project in which scientists overcam ...

In this BBC Four 90-minute special, physics professor Jim Al-Khalili investigates the amazing science of gravity. ...

Lying on the remote north west coast of England is one of the most secret places in the country - Sellafield, the most controversial nuclear facility in Britain. Now, Sel ...