From the ancient ideas of a young Earth to the groundbreaking discovery of deep time, this book charts the evolution of geological thought. Follow the epic debates between Neptunists and Plutonists, the birth of paleontology, and the revolutionary theory of plate tectonics that finally explained earthquakes, volcanoes, and the slow drift of continents. This is the story of the explorers who mapped the Earth, the fossil hunters who discovered its lost worlds, and the scientists who pieced together a four-billion-year-old puzzle.