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 design, with thought-provoking extras and stylish illustrations. Essential for anyone keen on expanding their mind with science’s most thrilling ideas.