Did you know that the word fossil comes from the Latin word fossilis, which means "dug up"? Or that Arizona's Petrified Forest contains fossils that are 225 million years old? These and other interesting facts are in this book, part of the "Science Matters" series. Do not let the book's size fool you. A wealth of information is packed into its mere twenty-four pages. Readers will learn about studying fossils, how fossils are formed, using fossils to piece together information of the past, and more. The information is presented in clear, well-written, yet spare language, and is accompanied by colorful photographs and drawings. All the basic elements of a good nonfiction book are here: table of context, index, glossary ("Words to Know") and where to go for further information ("Surfing Our Earth"), but this series goes a step further to include a "Science in Action" sectionin this case, making a fossilwhich gives students some hands-on opportunities to apply and expand what they have learned. It also includes a "What Have You Learned?" section which helps reinforce the information by asking readers ten simple questions on the material presented in the book. This book is a must have for elementary science students and their teachers, and would be a great addition to a home-schooling parent's library. 2005, Weigl Publishers, Ages 8 to 12.