Dr. Alexandra Cist, board-certified in internal medicine, pulmonary medicine and critical care medicine, is on staff at Massachusetts General Hospital, where she serves on the ethics task force and other ethics committees.

Lynn Pasquerella is president of Mount Holyoke College in Massachusetts and has written about medical ethics.  She formerly chaired the University of Rhode Island institutional review board.

The American Society of Law, Medicine and Ethics, based in Boston, aims to be a forum for debate, scholarship and critical thought among professionals who work at the intersection of law, health care and ethics. Contact executive director Ted Hutchinson.

Sister Margaret Guider, associate professor of missiology at Boston College, is the author of Daughters of Rahab: Prostitution and the Church of Liberation in Brazil (Augsburg Fortress, 1995).

Richard Horsley, professor of liberal arts and the study of religion at the University of Massachusetts at Boston, has written about the Bible and liberation and how Jesus and Paul ignited a revolution and transformed the ancient world.

Michael Brown is a professor of anthropology and Latin American studies at Williams College in Williamstown, Mass. He has written about belief in magic and in channeling.

The American Ghost Society is a national network of ghost hunters, authors, ghost enthusiasts and psychical researchers who conduct investigations into the paranormal. They maintain a list of members and ghost hunters by state.

Jeff Belanger is the founder of Ghostvillage.com, an Internet community dedicated to the supernatural, and the author of several books on ghosts and the dead including The World’s Most Haunted Places, Weird Massachusetts, and Who’s Haunting the White House.