This book is part of a book series called Scientists in the Field .

This book has been graded for interest at 10-12 years.

There are 80 pages in this book. This book was published 2012 by Houghton Mifflin .

Peter Lourie is the author of many books for young people, including "On the Texas Trail of Cabeza de Vaca "and "Hidden World of the Aztec. "He lives in Weybridge, Vermont.