A colorful and enigmatic figure in the psychedelic community who played a significant role in spreading LSD in the U.S., and who reportedly had ties to various government agencies.

A psychopharmacologist who transitioned from studying drug dependence to exploring consciousness and mystical experiences, contributing to further understanding psychedelics' effects.

An activist and computer scientist who became influential in the psychedelic community, founding a nonprofit to research spiritual experiences and contributing to the modern psychedelic renaissance.

A prominent advocate for the therapeutic use of psychedelics who founded the Multidisciplinary Association of Psychedelic Studies (MAPS) to support research and policy changes.

A self-educated mycologist and entrepreneur whose work focuses on the discovery and research of fungi, including the genus Psilocybe, where his passion for mushrooms began from a transformative personal experience.

A former Harvard professor and psychologist whose experiments with psychedelics led to significant media attention and controversy, ultimately impacting the direction of psychedelic research in the U.S.