Fruit bodies of the fungus Psilocybe pelliculosa (A.H. Sm.) Singer & A.H. Sm. Specimens photographed in British Columbia, Canada. JimmyTheWorm (CC BY-SA 3.0)
Roland Griffiths is a neuroscientist at Johns Hopkins. He's just turned his attention to psilocybin, a classic hallucinogen commonly known as magic mushrooms. He tells Steve Paulson about his findings.