Andrew Newberg, MD, is an associate professor of Radiology and Psychiatry and an adjunct assistant professor of Religious Studies at the University of Pennsylvania, and also director of the Center for Spirituality and the Mind. He is co-author of "Why God Won't Go Away" and "The Mystical Mind". He lives in Bryn Mawr, Pennsylvania.
Mark Robert Waldman is adjunct faculty at Loyola Marymount University, Los Angeles, where he teaches Executive Communication in the EMBA program. He is a business and personal development coach and the author of twelve books, including the bestselling How God Changes Your Brain (coauthored with Newberg and named by Oprah as one of nine must-read books for 2012).