Dennis McKenna is a professor at the University of Minnesota, and an ethnobotanist by trade. Much of his work has focused on one thing: ayahuasca, the psychedelic that is the subject of this week's cover story. "My whole professional career turned out to be about ayahuasca," McKenna says. "There w ... More >>
A look at the psychoactive brew that brings users a spiritual payoff for their "work"