Part of the Eyewitness Science series, this book explains energy including a look at muscle energy, energy from fire, wind and water, potential energy, electromagnetism, conservation of energy, potential energy, measuring energy, fossil fuels and alternative energy forms. The book includes photographs, illustrations and 3-D models which help to create a visual approach to the experiments, discoveries and geniuses of science.

Includes index. "A Dorling Kindersley book."