Before Mary Bassett was director of Harvard’s FXB Center for Health and Human Rights, she was New York City’s Health Commissioner. Bassett talks about her experience dealing with the growing opioid epidemic in the city—what worked, what didn’t, and what New York can teach other cities coping with the same problem. She sat down with Kimberlyn Leary, an associate professor at Harvard Chan School and a psychologist at McLean Hospital who specializes in public health policy.