Stephen P. Kramer has had a lifelong interest in natural history. After receiving degrees in biology from Pacific Lutheran University and Northern Arizona University, he taught junior high school science for four years on the Navajo Reservation. He spends his time now as a househusband and writer. His first book for children was Getting Oxygen: What do you do if you're cell twenty-two? Mr. Kramer lives with his wife and two sons in Vancouver, Washington.