Many cancer patients who took the psychedelic drug psilocybin under supervision said the experience erased their anxiety and depression over illness and death.
The neurologist, who died Sunday, saw "infinitely moving, dramatic, romantic situations" during his decades studying the human brain. Fresh Air remembers Sacks with two interviews from 1985 and 2012.
Sometimes Greg O'Brien gets a tingling in the back of his brain that tells him a hallucination is coming. Lions. Spiders. Birds. Sometimes the creatures are friendly. Too often, they're not.