How do people come up with the great inventions that make our lives easier? Eureka! looks at 12 moments in history associated with some of the world’s greatest inventions and discoveries. From Joseph Priestly’s discovery of oxygen to Philo Farnsowrth’s creation of the TV screen, this fascinating book explains an amazing variety of inventions and reveals inspiring stories behind them. 246 pages, 6½" × 9½", hard cover.