Erik P. Goldschmidt is director of the Church in the 21st Century Initiative at Boston College. Its research includes the state of Catholic ministry in America.

John T. McGreevy is a respected historian of U.S. Catholicism. He is history professor and dean of Notre Dame’s College of Arts and Letters at Notre Dame University in Indiana.

James O’Toole is a history professor at Boston College who specializes in American Catholic history and popular devotional practices.

James P. Sterba is a professor of philosophy at the University of Notre Dame in Indiana. He has written about animal rights and environmental ethics.

David H. Smith is a professor emeritus of religious studies at Indiana University in Bloomington, Ind. He has studied religious and medical ethics.

William Greenway is an associate professor of philosophical theology at the Austin Presbyterian Theological Seminary in Austin, Texas. He is a member of the Christian Vegetarian Association.

Hugh LaFollette is the Cole Chair in Ethics at professor of philosophy at the University of South Florida St. Petersburg. He co-authored Brute Science: Dilemmas of Animal Experimentation and has written extensively on gun control and other issues.

Nathan Nobis is an assistant professor of philosophy specializing in animal rights and bioethics at Morehouse College in Atlanta, Ga. He can discuss and outline the debate over the treatment of laboratory animals.

Tom Regan is a professor emeritus of philosophy at North Carolina State University in Raleigh, N.C. His book The Case for Animal Rights (University of California, 2004) is considered a classic in the area.