empty tomb inc. is a nonprofit that tracks religious giving in the United States.

Kristen Monroe is a professor of philosophy and political science at the University of California, Irvine, and director of its Interdisciplinary Center for the Scientific Study of Ethics and Morality. She is the author of The Heart of Altruism: Perceptions of a Common Humanity.

Dan Hotchkiss is a Unitarian Universalist pastor and a senior consultant with the Alban Institute. In July 2009, he wrote an article for Church Executive magazine about how churches are making do with less from donors in the current economy.

William Enright is a Presbyterian pastor and director emeritus of the Lake Institute on Faith & Giving at Indiana University. He can discuss the center’s report on religious giving and the recession.

Ali Eastburn is the founder of With This Ring, a Christian organization that asks people to give up their wedding rings to buy clean water for villages in underdeveloped nations.

David Dollahite is a professor of family life at Brigham Young University. He studies how religious beliefs and practices affect family relationships.

Melissa Brown is a part-time instructor at Indiana University’s School of Public and Environmental Affairs. Her research focuses on fundraising and charitable giving.

The national headquarters for the United Methodist Church in Barcelona, Spain.

The Hamdard Center for Health and Human Services in Addison, in suburban Chicago, is a shelter that caters mainly to Muslim women; it does not serve pork and has prayer rugs available.