Peter Singer is the author or editor of over thirty books including Writings on an Ethical Life, a comprehensive volume of his best and most provocative writing, Animal Liberation, and most recently, The President of Good and Evil. Singer is currently the Ira W. DeCamp Professor of Bioethics at Princeton University's Center for Human Values. He lives in New York City. Jim Mason is an author, speaker, journalist, environmentalist, and attorney who focuses on human and animal concerns.
He is the co-author, with Peter Singer, of Animal Factories, and his writing has appeared in a variety of publications including the New York Times, the New Scientist and Audubon.