John Hyde Evans is a sociologist at the University of California, San Diego. He wrote Playing God?: Human Genetic Engineering and the Rationalization of Public Bioethical Debate and The History and Future of Bioethics: A Sociological View.

Michael M. Mendiola was associate professor of Christian ethics for the Graduate Theological Union in Berkeley, Calif. He wrote the article “Human Embryonic Stem Cells: Possible Approaches from a Catholic Perspective” for The Human Embryonic Stem Cell Debate (MIT Press, 2001). Mendiola passed away in 2008.

Dr. Irving Weissman is head of the stem cell research program at Stanford University in Palo Alto, Calif. He opposes an effort to repeal California’s law legalizing embryonic stem cell research.

Roger J. Nemeth is a sociology professor at Hope College in Holland, Mich. He has written about finances and congregations, including an essay, “The Religious Basis of Charitable Giving in America: A Social Capital Perspective” for the volume Religion, Social Capital and Democratic Life.

Steven Jacobs is a professor of religious studies and holds the Aaron Aronov Chair of Judaic Studies at the University of Alabama in Tuscaloosa. He can comment on altruism as a scholar of modern Jewish thought and from a post-Holocaust perspective.

Ahmad S. Dallal is dean of Georgetown University in Qatar. His research interests include early modern Islamic societies, the causes of 9/11 and the relationship between Islam and science.

Eric M. Woodrum is a professor of sociology and anthropology at North Carolina State University in Raleigh. He has written about the effects of religion and theology on the environmental movement.

Sharon L. Miller is associate director of the Center for the Study of Theological Education at Auburn Theological Seminary in New York City. She is a sociologist of religion who specializes in evaluation research and data analysis. Miller co-edited a collection of essays on religious giving titled Financing American Religion.

Stephanie Clintonia Boddie is senior researcher at the Pew Forum on Religion & Public Life in Washington. She specializes in the role of religious congregations in providing community services and has published two reports on giving for the Annie E. Casey Foundation’s Center on Social Development.