Gregory Koukl is founder and president of Stand to Reason, an organization devoted to Christian apologetics and based in Signal Hill, Calif. He is also an adjunct professor of Christian apologetics at Biola University and has written in defense of faith against the arguments of the new atheists.

Mona Eltahawy is a speaker, writer and commentator who focuses on issues concerning Islam. She is based in New York City.

Daniel Howard-Snyder is a professor of philosophy at Western Washington University in Bellingham. He wrote the article “Grounds for Belief in God Aside, Does Evil Make Atheism More Reasonable Than Theism?” in the journal Contemporary Debates in Philosophy of Religion (2003).

David P. Barash is a professor of psychology at the University of Washington. He wrote an April 20, 2007, essay, “The DNA of Religious Faith,” in The Chronicle of Higher Education.

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.