Dennis McKenna

Dennis was also a key guest on The Cosmic Echo Podcast on September 18th, 2018.

He has been the main guest several times on popular radio show Coast to Coast AM. His last appearance on the show was the Sunday March 23, 2014 episode.

McKenna's memoir, The Brotherhood of the Screaming Abyss about his and his brother Terence's life and journeys together, was published in 2012.

McKenna participated in the first Evolver Convergence 2012 in Pittsburgh, June 1–4.

On December 16, 2012, April 17, 2017, and June 21, 2018, McKenna was the guest on The Joe Rogan Experience podcast.

McKenna received his Master's degree in botany at the University of Hawaii in 1979. He received his doctorate in botanical sciences in 1984 from the University of British Columbia, where he wrote a dissertation entitled Monoamine oxidase inhibitors in Amazonian hallucinogenic plants: ethnobotanical, phytochemical, and pharmacological investigations. McKenna then received post-doctoral research fellowships in the Laboratory of Clinical Pharmacology, National Institute of Mental Health, and in the Department of Neurology, Stanford University School of Medicine.

During the early 1970s McKenna developed a technique for cultivating psilocybin mushrooms with his brother Terence and they published what they had learned in a book entitled Psilocybin - Magic Mushroom Grower's Guide. McKenna and his brother were the first to come up with a reliable method for cultivating psilocybin mushrooms at home.

Dennis Jon McKenna (born December 17, 1950 in Paonia, Colorado) is an American ethnopharmacologist, research pharmacognosist, lecturer and author. He is the brother of well-known psychedelics proponent Terence McKenna and is a 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.