Why psychedelic drugs are having a medical renaissance

For C.J. Hardin, an Army veteran, dealing with post-traumatic stress disorder is an everyday feat. After years of pills and therapy failed to help his disorder, Hardin knew he needed an alternative. So he turned to a surprising substitute that's at the forefront of a revolution in neuroscience and medicine: psychedelics like MDMA and psilocybin. Science correspondent Miles O’Brien reports.