This book is part of a book series called National Geographic Investigates .

This book has been graded for interest at 10+ years.

There are 64 pages in this book. This book was published 2007 by National Geographic Society .

Beth Gruber is a graduate of the New York University School of Journalism. She has worked in children's publishing for almost 20 years as an author, editor, and reviewer of books for young readers.