Co-author Tracey Turner has written more than 70 books, most of them for children, on subjects including inventions, the universe, famous writers, and deadly perils. For Kingfisher, she is the author of The Curious Book of Lists and This is Our World. As an editor, she commissioned and edited the Horrible Histories series. Co-author Jane Burnard has worked as a children's books editor for many years, and more recently as a writer, translator, and gardener. Dawn Cooper is an illustrator whose work includes non-fiction books for children, book covers, maps and packaging.