Leon Gray is a highly experienced children's book author who has written titles on many subjects, from science and geography to world issues. Before becoming an author, he worked in book publishing in London. Leon now lives in Scotland and is married with three children. Ella Newell has written numerous titles, on a lot of different subjects, for children. Her many books include educational titles for children about science, world affairs, religion, history and social issues. When she is not writing, Sarah also teaches young people and adults. She lives in Oxford with her husband and children. Anna Claybourne enjoys writing nonfiction for children. It's a good thing she does, because she's the author of well-over 100 books on a range of topics.