Clive Gifford started writing books at the age of 16 and hasn't stopped since! He has had over 150 books published, most of which are for children. His books have been nominated for, or won, Royal Society, School Library Association, Blue Peter, Smithsonian and TES awards. Clive lives in Manchester. Tracy Worrall creates her artwork using both digital and traditional media. She produced animations for an award-winning educational television series for the Discovery Channel. Tracy lives in Liverpool.