Outlawed in 1970, the street drug developed a reputation as the dangerous toy of the counterculture, capable of inspiring either moments of genius or a descent into madness.
Now science is taking a fresh look into this psychedelic world, including the first human LSD trials in more than 35 years.
LSD’s inventor Albert Hofmann called it <em>medicine for the soul</em>. The Beatles wrote songs about it. Secret military mind control experiments exploited its hallucinogenic powers.