Fossils have long fascinated humans. This book explains how fossils were formed and where they are now found. An explanation of how scientists find and use fossils to study prehistoric animals is also given. Animals. American History. Earth Science. Geography. Health. Space. True Books covers all this and more in photo-filled chapter books that provide a basic introduction to curriculum-relevant topics. Ideal for today's young investigative reader, each True Book includes lively sidebars, a glossary and an index, plus a comprehensive To Find Out More section listing books, organizations, and Internet sites.