This book is part of a book series called Real World Science .

This book has been graded for interest at 9-13 years.

This book was published 2009 by Cherry Lake Publishing .

Heather Miller works as a doctor in an emergency department and has a degree in Homoeopathy. She enjoys philosophy and the study of Sanskrit. She grew up in South Africa and now lives in Melbourne with her husband and two children. Janet Davies has a degree in fine art. She has worked in advertising and graphic design. She is mother to Grace (11) and Tom (7) and is currently studying art therapy. Janet has always loved illustration and was inspired to paint children's art for her daughter when she was just a baby.