For the first time in more than four decades, the drug lysergic acid diethylamide -- better known as LSD -- has been the experimental adjunct to psychotherapy in a controlled clinical trial approved by the U.S. Food and Drug Administration. And a newly published study on that trial reports that the medication's anti-anxiety effects on patients facing life-threatening illnesses were sizable, sustained -- and free of worrisome side effects.

In short, everything was groovy.