LSD (Drug)

Journalist Stephen Kinzer reveals how the CIA worked in the 1950s and early '60s to develop mind control drugs and deadly toxins that could be used against enemies. Originally broadcast Sept. 9, 2019.

A new documentary, Oliver Sacks: His Own Life, chronicles the late neurologist's efforts to understand perception, memory and consciousness. Sacks spoke to Fresh Air in 2012.

Dass, who died Dec. 22, was a practitioner of Eastern-inspired philosophy who became interested in the religious potential of LSD in the '60s and '70s. Originally broadcast in 1990.