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Energy is a valuable resource that comes in many different forms. This book will help kids learn about the history and science of the world's sources of energy, from nonrenewable fossil fuels such as coal, oil, and natural gas to renewable energy sources such as solar and wind power. Sidebars and fun trivia break up the text, making it easily accessible and engaging, while hands-on projects encourage active learning. Activities range from constructing a battery to recreating an oil spill to explore how difficult cleanup can be.