Have you ever wondered why a rainbow is curved? Or why left-handers aren't extinct? How a sunflower is like a synchronised swimmer, or a lightning bolt is like a blood vessel? The answer to all these questions and more can be summed up in one simple word: MATHS. As the inimitable Eddie Woo explains, maths is not just about numbers. Maths is about patterns, and our universe is extraordinarily patterned. With enthusiasm and wonder, Eddie is here to help us discover these patterns. With engaging clarity and entertaining anecdotes, Eddie demonstrates the intricacy of maths in all the things we love - from music in our iPods to our credit cards. Filled with humour and heart, this book will fascinate, entertain and illuminate the maths that surrounds us.