Thomas A. Mappes holds a B.S. in chemistry from the University of Dayton and a Ph.D. in philosophy from Georgetown University. He is professor of philosophy at Frostburg State University, where he has taught since 1973. He is the coeditor (with Jane S. Zembaty) of Social Ethics: Morality and Social Policy (McGraw-Hill, 4/e, 1992) and his published work appears in journals such as American Philosophical Quarterly and Kennedy Institute of Ethics Journal. In 1985, the Frostburg State University Foundation presented him with the Faculty Achievement Award for Teaching.
David DeGrazia earned a B.A. from the University of Chicago, an M.St. from Oxford University, and a Ph.D. from Gerogetown University, each in philosophy. He has been teaching philosophy and biomedical ethics at George Washington University since 1989. He is the author of Taking Animals Seriously (Cambridge University Press) and of articles published in such journals as Journal of Medicine and Philosophy, Public Affairs Quarterly, History of
Philosophy Quarterly, and Southern Journal of Philosophy.