This book is part of a book series called Cool Science .

This book has been graded for interest at 9-12 years.

This book was published 2008 by Lerner Publications .

D. J. Ward is a high school science teacher who also writes science books for children. His titles include Exploring Mars, Materials Science, and another book in the Let's-Read-and-Find-Out Science series, What Happens to Our Trash? He lives in Castle Rock, Colorado. Paul Meisel has illustrated many books for children, including Why Are the Ice Caps Melting?, Energy Makes Things Happen, and What Happens to Our Trash? in the Let's-Read-and-Find-Out Science series. He lives in Newtown, Connecticut.