Ian Stewart

A new history of the Celts that reveals how this once-forgotten people became a pillar of modern national identity in Britain, Ireland, and France. Before the Greeks and Romans, the Celts ruled the ancient world. They sacked Rome, invaded Greece, and conquered much of Europe, from Ireland to Turkey. Celts registered deeply on the classical imagination for a thousand years...

From Newton's Law of Gravity to the Black-Scholes model used by bankers to predict the markets, equations are everywhere—and they are fundamental to everyday life. Seventeen Equations that Changed the World examines seventeen groundbreaking equations that have altered the course of human history. The book explores how Pythagoras's Theorem led to GPS and SatNav; how logarithms are applied in architecture;...