Chris Oxlade is an experienced author of children's information books, having written more than 150 on a range of subjects, specialising in science and technology. John Haslam has been working as an illustrator for most of his professional life. John worked in advertising for 10 years and worked on various projects including TV storyboards, to illustrating for all kinds of accounts from Pritt Stick (the Pritt Stick Man was his invention), to comic pages such as Danger Mouse, Disney and Transformers.