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 ...

The brains of subjects lying awake with their eyes closed, under a placebo (left) and the drug LSD (right), are seen when being examined using a functional MRI machine. Reuters Scientists for the ...

Illustration of a human brain. Lysergic acid diethylamide, better known as LSD or acid, has a checkered past — or, perhaps, a roiling and vibrantly colored past. Since the drug was synthesized by ...

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 ...

They were scientists and writers in the ’40s and ’50s, mystics and musicians in the ’60s and ’70s, neo-psychedelic counter-culturalists in the ’80s and ’90s. And in the 2010s, they’re back — as ...