Human Nature: Science, Technology, and Life.

Taking the Fun Out of Marijuana

GW Pharmaceuticals, a British company, has just requested European approval of Sativex, a "cannabinoid pharmaceutical product." ... Drugs can be, and are being, reengineered every day. Nicotine and caffeine appear in new forms. Cannabis is an herb, then a powder, then a capsule, and now a spray, with significant chemical adjustments along the way. How do you fight an enemy that keeps changing? How do you recognize when it's no longer your enemy?

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