Gregory A. Prince received a PhD in pathology from UCLA in 1975, studying respiratory syncytial virus (RSV), the primary cause of infant pneumonia worldwide. In addition to a long career in science, Dr. Prince has developed an avocation as a historian. His first book, Power From on High: The Development of Mormon Priesthood, was published in 1995, and he is currently writing a biography of LDS Church President David O. McKay.