This book is part of a book series called Science Fact Files .

This book is aimed at children in primary school.

There are 48 pages in this book. This book was published 2000 by Hachette Children's Group .

Alex Pang is an experienced artist who has illustrated series of optical illusions. Chris Cooper has written for Doctor Who Adventures and creates the Star Trek strip in the official magazine Egle Bartolini is an up and coming talented illustrator.