It was almost fifty years ago when Timothy Leary conducted psilocybin research at Harvard University. His study became controversial and was eliminated within a few years. Now, psychedelic drug research may be returning to Harvard. Dr. John Halpern is a psychedelic researcher who conducted groundbreaking research in 2005 studying peyote use by Native Americans in a religious context. More recently, Dr. Halpern conducted an FDA-approved Harvard project studying the effects of MDMA on dying cancer patients. Now, he's seeking approval from Harvard to launch a new project, studying the effects of LSD on patients suffering from extreme cluster headaches.