Jacqui Bailey has spent a lot of her adult life working with children's books. She has been an editor and publisher of everything from picture books to encyclopaedias, but mostly enjoys finding out amazing bits of information and then writing about them. She is an award-winning author with more than 20 children's information books to her name, including A Cartoon History of the Earth series. Matthew Lilly is an illustrator with over 40 years of experience in children's publishing. He has designed and illustrated a variety of fiction and non-fiction titles for several publishers and organisations including Walker books, Hachette and A & C Black.