Isabel Thomas is a science writer and children's author who has been shortlisted for the Royal Society Young People's Book Prize, the ASE Science Book of the Year, and the Blue Peter Book Awards. Isabel also writes for children's science magazines Whizz Pop Bang and The Week Junior Science + Nature, and for outreach projects. She is a primary school governor and parent of three young sons. Katja Spitzer is a Berlin-based illustrator. Her many books include Quodlibet, which received a Gold Medal award from 3x3 magazine and two children's books, How Many Legs? and Let's Go Outside.