Art Bell welcomes ethnobotanist and philosopher Terence McKenna from his home on the slopes of Mauna Loa in Hawaii for a wide-ranging conversation about psychedelic substances, consciousness, and the nature of time. McKenna argues that cultures selectively stigmatize certain substances while glorifying others, and that altering consciousness is as old as humanity itself. He describes his current work cataloging hallucinogenic botany and discusses DMT, a compound produced naturally in the human… Full show notes & guests: https://artbellarchive.org/episode/april-01-1999-psychedelic-substances-terence-mckenna