Scientists unlock the genetic basis for weed's high

Not all weed is created equal. Some members of the Cannabis genus pump out tetrahydrocannabinol (aka THC, the plant's main psychoactive chemical) like nobody's business, while others produce very little of the mind-altering molecule. But the genetic basis for why some plants excel at getting you high while others are… » 10/20/11 4:20pm 10/20/11 4:20pm