The United States government’s principal agency for protecting the health of all Americans and providing essential human services.

The History of the Sexuality Information and Education Council of the United States. Read a history of abstinence-only sex education and government funding from the National Coalition to Support Sexuality Education.

Phil Zuckerman is a professor of sociology and secular studies at Pitzer College in Claremont, Calif. He is the author of The Nonreligious: Understanding Secular People and Societies.

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.

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.