One Life, One Planet: One Koala in Fifty Thousand

Sarah Ridley (Author) Sarah Ridley has an enduring interest in history, the natural world and many other topics, which has made her work as an editor and writer of children's information books endlessly fascinating. Some of her books have been shortlisted or longlisted for information book awards, including Dear Jelly: Family Letters from the First World War and Suffragettes and the Fight for the Vote. Sarah lives in Colchester with her husband and her student daughter's guinea pigs.Vivian Mineker (Illustrator) Vivian Mineker is a Taiwanese-American illustrator who mainly works with watercolour and gouache. When she's not drawing or painting, you can probably find her outside running around with her dog Darlie, browsing and sniffing at books in bookstores, and occasionally stopping for a cup of coffee or a piece of cake.