Dennis Culhane is a professor of social welfare policy at the University of Pennsylvania where he studies homelessness and housing policy.

Ronald Inglehart is a political science professor at the University of Michigan in Ann Arbor and a research professor at its Center for Political Studies. He is particularly interested in the effects of changing belief systems on societies socially and politically. His books include (as co-author) Sacred and Secular: Religion and Politics Worldwide, which concluded that industrial […]

Dean Hamer is a geneticist and director of the Gene Structure and Regulation Unit at the National Cancer Institute in Bethesda, Md. He is the author of The God Gene: How Faith Is Hardwired Into Our Genes. His hypothesis, criticized by some other scientists, is that some people inherit a gene that predisposes them toward faith in […]

Ryan T. Cragun is an associate professor of sociology at the University of Tampa, where he studies secularization, the nonreligious and members of The Church of Jesus Christ of Latter-day Saints.

Todd Stiefel is a secular humanist, atheist and full-time freethought activist whose mission is “to gain respect for freethinkers and ensure the complete separation of church and state.” He is founder and president of the Stiefel Freethought Foundation, based in Raleigh, N.C., and a trustee of the Richard Dawkins Foundation for Reason and Science. Stiefel also serves on […]

Amanda K. Metskas is executive director of Camp Quest, a network of summer camps aimed at children from freethinking families. She is based in Columbus, Ohio.

Hemant Mehta is board president of the Foundation Beyond Belief and a former board chair of the Secular Student Alliance. He’s also spokesperson for the Chicago Coalition of Reason. Mehta, a frequent public speaker, blogs at the Friendly Atheist and is the author of I Sold My Soul on eBay (2007).

Edwin Kagin is national legal director for American Atheists and co-founder of Camp Quest, the first residential summer camp for children of secular parents. He and his wife, Helen Kagin (the other co-founder), served as the original camp’s directors from 1996 until 2005. Helen Kagin died in February 2010. Edwin Kagin is the author of Baubles of Blasphemy (2nd […]

Debbie Goddard is director of African Americans for Humanism, a program of the Council for Secular Humanism.