Simon once worked at the Science Museum in London, where he flew paper aeroplanes and made giant bubbles for children. Now he writes and edits books about things like dinosaurs, ice hockey, thunderstorms and llamas. He lives in Kent with his wife and daughter, a cat and two tortoises. Dan Green has drawn silly pictures since he could hold a crayon. Then he grew up and started making books about stuff like trucks, space, people's jobs, Doctor Who and Star Wars. Dan lives in Suffolk with his wife, son, daughter and dog that takes him for very long walks.