Claudia Martin is the author of many books and online articles for children and young adults. Her favourite subjects are history, current affairs, geography, the natural world and technology. She lives in London with her family. Rory Walker is a graduate of both Falmouth College of arts (BA in Illustration), and Brighton University (Masters in Sequential Design). He's helped to bring stories to life for clients around the world, including a huge number of major publishers, animation and video game studios like Aardman and Disney, TV channels like the BBC and ITV, and a whole host of magazines, websites and design groups.