Highlights include: Age and origins of the Earth. Volcanoes. Earthquakes. Alfred Wegener. Continental drift. Harry Hess. Plate tectonics. The Himalayas. The formation of mountains. Religion, myth, and science. Human origins. The Scopes trial. The legacy of Charles Darwin. Mutation and adaptation. Paleoanthropology. Louis and Mary Leakey. Donald Johanson and "Lucy." Primordial soup. DNA. Origins of life.