Tom Jackson is a science writer based in Bristol, UK. Tom specialises in recasting science and technology into lively historical narratives. After almost 20 years of writing for children and adults, Tom has uncovered a wealth of stories that help to bring technical content alive and create new ways of enjoying learning about science. In his time, Tom is a Bloomsbury author who wrote Chilled: How Refrigeration Changed the World and Might Do So Again for the Sigma list. He is also the author for our Lights! Matter! Action!, A Beginners Guide to Physics, for Bloomsbury Children’s Books. Chris Mould is a freelance illustrator based in West Yorkshire. Known for his quirky black and white line work, he has illustrated a number of books for children including A Boy Called Christmas by Matt Haig, has been featured in magazines and newspapers, and most recently his work has been used in television and feature film development work. He has also been shortlisted for the Kate Greenaway medal for Pirates 'n' Pistols.