This is one of a series in which each book contains flaps and fold-outs, and is accompanied by a sheet of reusable stickers. Focusing on the nature of energy, this book looks at all its forms, and its sources, from coal and water to nuclear and non-polluting energies. It describes what the universe was like at the time of the Big Bang, the role of the sun in photosynthesis, and how windmills and watermills work. The book follows the first energy used by man, and takes readers through the technical evolution, the invention of the steam engine, the first light bulb, the discovery of nuclear energy, and the growing use of recyclable energies. Special effects include a transparent page which allows readers to enter a greenhouse and discover beautiful plants, vibrating photographs, and a feather to show static electricity.