David interviews Dr. Rick Strassman to discuss America's growing acceptance of psychedelics, DMT, possible explanations of extraterrestrial encounters, and more. Dr. Strassman performed the first new human studies with psychedelic drugs in the US in over 20 years. His research involved the powerful naturally-occurring compound, DMT – N,N-dimethyltryptamine. Led to this substance through his earlier study of the pineal gland as a potential biological locus for spiritual experiences, he administered several hundred doses of DMT to approximately 60 volunteers between 1990 and 1995. He wrote about this research in the popular book, DMT: The Spirit Molecule, which has sold over 100,000 copies, has been translated into 12 languages, and is now available as an audio-book. It also inspired an independent documentary by the same name, now available on Netflix. His work has also been popularized through various discussions on the Joe Rogan Experience podcast.