This book is part of a book series called Scientific American-Cutting-Edge Science .

This book has been graded for interest at 12-17 years.

This book was published 2007 by Rosen Publishing Group .

Judith Levin has worked in publishing for 20 years as an editor and a freelance writer. She is the author of a number of biographies, including the Chelsea House title Hugo Chavez, as well as books for children and teens on history and science. She currenlty resides in New York City.