Newton's Principia
A rare first edition of Newton's mathematical masterpiece has been stolen! And is Newton the Greatest Briton?
Over the last few years the words string theory have nudged their way into public consciousness. It's a theory of everything in which everything's made of strings — or something like that. But why strings? What do they do? Where did the idea come from and why do we need such a theory? David Berman has an equation-free introduction for beginners.
