The Ripple Effect Podcst # 92 (Dennis McKenna)

Episode 92 with Dennis McKenna, an ethnopharmacologist, research pharmacognosist, lecturer & author of The Brotherhood of the Screaming Abyss about his and his brother Terence's life and journeys together.
His brother Terence McKenna is well-known psychedelics proponent.
Dennis is also the founding board member and the director of ethnopharmacology at the Heffter Research Institute, a non-profit organization concerned with the investigation of the potential therapeutic uses of psychedelic medicines.
He was also in two great documentaries, Neurons to Nirvana: Understanding Psychedelic Medicines and DMT: The Spirit Molecule.