Put on your detective hat and uncover the facts and myths about crop circles. Topics discussed include early crop circle sightings and the theories behind them, design details, alien creation theories, power of thought theories, relationship to water theories, microwave energy theories, human creation theories, scientific investigations, hoaxers, and crop circles today. Features include a Tools and Clues section that highlights research tools, technology, and investigative methods, a timeline, a glossary, selected bibliography, further readings, places to visit, source notes, and an index. Unsolved Mysteries is a series in Essential Library, an imprint of ABDO Publishing Company.