Designed to attract first readers to non-fiction, this series presents popular topics through a combination of illustrations and photographs linked by a simple, carefully controlled text and captions. Each book includes a "Things to do" section, glossary and index. This book explains how this vital source of power, which we use every day, is made. Jacqueline Dineen is an experienced author of children's information books, including "Volcanoes" in the "Natural Disasters" series.