Joseph K. Sheldon received his Ph.D. in entomology from the University of Illinois. He is a former professor and head of the Department of Biology at Eastern University (St. Davids, Pennsylvania) and former professor of biology at Messiah College (Grantham, Pennsylvania). He is now a research volunteer at the Au Sable Institute of Environmental Studies (Coupeville, Washington). Sheldon is the author of Rediscovery of Creation: A Bibliographical Study of the Church's Response to the Environmental Crisis and a co-author of Redeeming Creation: The Biblical Basis for Environmental Stewardship.