President Trump recently signed an order to speed up the evaluation of psychedelics to treat the brain. That’s coming after decades of strict prohibition on psychedelic drug use dating back to President Nixon. So how did we go from that to a psychedelic renaissance? A look into a key institution in the world of psychedelic research may give us some clues. This episode, NPR’s brain correspondent Jon Hamilton shares insight from a recent trip. (No pun intended.) Want more psychedelic content? Catch our episode on ketamine therapy here, or learn why some scientists want to take the trip out of psychedelics here. Have other questions about psychedelics and the brain? Let us know by emailing shortwave@npr.org!