In 1943, a chemist in Switzerland synthesized a drug that alters consciousness. His discovery changed the study of medicine, psychiatry and biology—and became a central component of the counterculture ...

Dr Albert Hofmann accidentally discovered the hallucinatory effects of LSD in April 1943. In 1986, he told the BBC about a "terrifying" bicycle ride home from the laboratory.

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 ...

It’s no secret that LSD causes vivid hallucinations, altered states of consciousness, one-ness with the universe, and a host of other psychedelic effects. But ever since the trippy chemical was ...

The first time that I took LSD, I accepted three and a half tabs on my tongue from a man dressed up in a monkey suit. Despite the hot summer weather, I raided the winter wardrobe of the house I was ...

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 ...

LSD is an extremely potent, long-lasting psychedelic drug: A dose of just 100 micrograms is enough to send someone on a hallucinatory trip that can last a whole day. Now, scientists report that the ...

"Do not do LSD, children," Josh Brolin said on 'Jimmy Kimmel Live,' before adding, "It was the greatest thing I ever did" Tommy McArdle is a Writer-Reporter on the Movies team at PEOPLE. He joined the ...

While the dangers of illegal drugs have always been talked about, the exact mechanism of how these drugs affect the brain hasn’t been well understood. New information from a study in the UK could shed ...