Dennis McKenna is an ethnopharmacologist, researcher lecturer and author who has spent decades doing academic and personal research with psychedelics. Dennis is also the author of Brotherhood of the Screaming Abyss, a memoire about his adventures with his brother, the late Terence McKenna.
In addition to being part of the same circle as Dennis and Terence McKenna, Dr. Bruce Damer, is a researcher at UC Santa Cruz focusing on origin of life theory. Bruce has also worked on projects for NASA in which he developed asteroid-capturing spacecraft.
For a write-up and more mind melds THIRDEYEDROPS.com