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 ...

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 ...

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 chemist Albert Hoffman in 1938, ...

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 ...

Lysergic acid diethylamide-25 was synthesized in a Swiss laboratory in 1938. Early researchers called it “psychotomimetic” because it caused psychosis akin to schizophrenia. In the 1950s, the British ...