Jane Goodall is the world's foremost authority on chimpanzees. An internationally renowned conservationist, she is the founder of the Jane Goodall Institute and has received many distinguished awards in science. Dr. Goodall is also the author of many acclaimed books, including the bestseller Reason for Hope.

Alan Marks began his career illustrating for magazines and newspapers. His first children's book Storm, written by Kevin Crossley Holland, won the Carnegie Medal. Alan now illustrates a wide variety of subjects, from nursery rhymes to war poetry. He is the illustrator of the Boston Globe-Horn Book Award Honor Book A Mother’s Journey, Behold the Beautiful Dung Beetle, Planet Zoo, The Spirit of the Forest, and more. Alan lives in an old house in the Kent countryside with his wife and two daughters.