This book is part of a book series called Know How Know Why .

This book has been graded for interest at 8-12 years.

There are 48 pages in this book. This book was published 2008 by Top That! Kids .

Rupert Matthews, is an experienced writer and editor of children's books, and specializes in works on history. John Butler is known and highly respected for his wildlife picture books. He has illustrated six titles for Puffin, all by Theresa Radcliffe. John lives in Kent with his wife and two grown-up daughters.