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 .

Victoria Sherrow is a freelance writer and a member of the Society of Children's Book Writers. She is also the author of many books for middle and high school readers, including Great Scientists, Political Leaders and Peacemakers, and American Women in the Military.