Douglas Hartmann is an associate professor of sociology at the University of Minnesota and co-author of the 2006 study on the social acceptance of atheists in America.

Joseph Gerteis is an associate professor of sociology at the University of Minnesota and co-author of the 2006 study on the social acceptance of atheists in America.

Kelly James Clark is Senior Research Fellow at the Kaufman Interfaith Institute at Grand Valley State University in Grand Rapids, Mich. He has written about atheism in modern society, including the entry on atheism for the New Dictionary of Christian Apologetics.

Ronald Aronson is Distinguished Professor of Interdisciplinary Studies at Wayne State University in Detroit. He is a contributor to The Nation and the Times Literary Supplement and has written on the history of atheism and its current manifestations.

George Alfred James is an associate professor in the department of philosophy and religion studies at the University of North Texas in Denton. He wrote the atheism entry for the Encyclopedia of Religion.

Francis J. Beckwith is professor of philosophy and church-state studies at Baylor University in Waco, Texas. He writes and comments widely in defense of traditional Christianity. He also wrote Defending Life: A Moral and Legal Case Against Abortion Choice.

Russell Tracey McCutcheon is a professor of religious studies at the University of Alabama in Tuscaloosa, Ala.

Jay Geller is an associate professor of modern Jewish culture and religious studies at the divinity school at Vanderbilt University in Nashville, Tenn. He has written on atheism and modern Judaism. He is also an expert on Judiams and modernity and the Holocaust on film and in literature.

Norman L. Geisler is a professor of Christian apologetics and co-founder of Southern Evangelical Seminary and Bible College in Matthews, N.C. He has written on secularism and humanism from a Christian point of view.