Jim Mason was trained as a lawyer. He was one of founders and editor of the Animals Agenda magazine, and co-author (with Peter Singer) of Animal Factories (1980) and The Ethics of What We Eat (2006). He has written articles for The New York Times, New Scientist, Newsday, Orion, and Audubon magazine, and has contributed to several anthologies, including In Defense of Animals (2005). His website is www.jimmason.website.