Since the beginning of time, members of various societies have doggedly searched for ways to alter their states of consciousness, believing that elusive truths and visions could be attained through this process. The History Channel special Ancient Mysteries: Ancient Altered States discusses this phenomenon as it materialized in various cultures, via the use of everything from mind-altering chemicals to exotic rituals. In addition, physicians such as Dr. Andrew Weil and others turn up on-camera, to speculate on the universal reasons belying this trans-cultural, trans-generational drive that humans possess. ~ Nathan Southern, Rovi