Psychedelics are experiencing a resurgence. What can we learn from bad trips?

From Ayahuasca to Psilocybin, Why Bad Trips Are a Good Thing

Picture taken on August 09, 2014, of a healer starting a yage ceremony by offering what they call the medicinal plant to a person taking part of the ritual, in La Calera, Cundinamarca department, Colombia. (Eitan Ambramovich/EFT/Getty Images)