Bicycle day's just around the corner, but it's not what you think. This isn't a holiday honoring your favorite two wheeled, environmentally friend vehicle — it's about the day chemist Albert Hoffman first discovered the psychedelic effects of Lysergic Acid Diethylamide, or LSD-25. Today we're talking the chemical history of LSD, so get ready to turn on, tune in, but don't drop out... you might just learn something.