This book is part of a book series called Bridgestone Science Library .

This book has been graded for interest at 7-9 years.

There are 24 pages in this book. This book was published 2000 by Capstone Press .

Daniel Cohen has written more than seventy books for young people, including Great Mistakes and Hiram Bingham and the Dream of Gold. He lives in Port Jervis, New York, with his wife and daughter.