Magic mushrooms, LSD, ayahuasca ceremonies, DMT, ketamine: take a trip into the science and research of hallucinogens. Renowned psychiatry professor and psychedelics researcher Dr. Charles Grob of Harbor-UCLA Medical Center sits down to talk about ethnobotanical origins of psychedelics, how much LSD is too much LSD, what juices are squirting in the brain when you're tripping out, who should NOT take psychedelics, talking to dead people, antidepressants and mushrooms, the murky history of psychedelic research, and future paths of study that may help the world. Next week, wall-to-wall listener questions and some tales from your internet dad’s own  journey.