This day—April 19—is the 78th anniversary of the first-ever acid trip. It is affectionately referred to by psychonauts around the globe as Bicycle Day. The psychedelic compound LSD is known primarily ...

Add Yahoo as a preferred source to see more of our stories on Google. Bettmann via Getty Images In November 1956, three people gathered in a converted Connecticut barn to take LSD, a powerful ...

Callen Ghahramani says he has had persistent visual distortions since trying what he thought was acid as a teenager. His symptoms — severe anxiety and depersonalization — reflect the common features ...

LSD began with an accident — a chemist absorbed a tiny amount of a compound he barely understood. What followed was a journey that would reshape science, psychology, and global culture for decades.

BIRMINGHAM, England — Half a century after Timothy Leary urged the world to “Turn on, tune in, drop out,” there’s a surge of interest in lysergic acid diethylamide, or LSD. The psychedelic drug was ...

I was a lost soul after my dad died when I was 14. I stayed in my room for two years straight playing video games, and only came out to get the pizzas I ordered. Even before I developed hallucinogen ...