Rebecca Denova is a lecturer in religious studies at the University of Pittsburgh in Pittsburgh, Pa., where she has taught a course called “Apocalypse Then and Now.”

John J. Collins is a professor of Old Testament interpretation and criticism at Yale Divinity School in New Haven, Conn. He is an expert on Jewish apocalypticism.

18Doors.com (formerly InterfaithFamily.com) is a resource supporting interfaith couples exploring Jewish life and inclusive Jewish communities. It offers educational content; connections to welcoming organizations, professionals and programs; and resources and trainings for organizations, clergy and other program providers.

Nov. 5, 2010, article posted on InterfaithFamily.com about adoption in interfaith relationships.

Read Rabbi Shmuley Boteach’s remembrance of Christopher Hitchens at The Forward.

At The Tablet, the online Jewish periodical, Marc Tracy explores how Christopher Hitchens’ late-in-life discovery of his Jewish roots affected his writing.

Rabbi Dayle Friedman is founder and director of Hiddur: The Center for Aging and Judaism of the Reconstructionist Rabbinical College in Philadelphia. She was a geriatric chaplain for years and now trains rabbis to work with the elderly.

Christopher Hays is an associate professor of anthropology at the University of Wisconsin, Washington County in West Bend. He is an expert on the relationship between science and religion.

Daniel Harlow is a religion professor at Calvin College in Grand Rapids, Mich., whose research interests include evolutionary science and Christian theology. When Harlow wrote an article questioning the historical Adam, he faced a college investigation.