In this three-part documentary series, Professor Jim Al-Khalili tells the story of one of the greatest scientific discoveries ever: that all the material world is made up of atoms.

Atom - The Clash of the Titans: Professor Al-Khalili takes us from the discovery of the atom to the development of quantum mechanics.



Atom - The Key to the Cosmos: This episode tackles world-changing discoveries such as radioactivity, the Atom Bomb and the Big Bang, and tries to answer the biggest questions of all - why are we here and how were we made?