Why is a rainbow curved? Why aren’t left-handers extinct? How is a sunflower like a synchronised swimmer? Why is ‘e’ a magic number?    The answer to these questions is contained within one simple word: MATHS. Because maths is all about patterns, and our universe is extraordinarily patterned.    With enthusiasm, humour and heart, Eddie Woo shows how card tricks, conspiracy theories, teacups, killer butterflies, music, lightning and so much more illuminate the spellbinding world of maths that surrounds us.