30-second theories: the 50 most thought-provoking theories in science, each explained in half a minutr

When it comes to big science, very few things are conclusively known.

From Quantum Mechanics to Natural Selection, what we have instead are theories - ideas explain why things happen the way they do.

We don't know for certain these are correct - no one ever saw the Big Bang - but with them we can paint beautiful, breathtaking pictures of everything from human behaviour to what the future may hold.

Profiling the key scientists behind each theory, "30-Second Theories" presents each entry in a unique, eye-catching full-colour design, with thought-provoking extras and stylish illustrations.

It is essential for anyone keen on expanding their mind with science's most thrilling ideas.