THC

(Newser) - The “fake weed” sweeping the US isn’t marijuana, but it packs a stronger punch—and it’s legal. “K2” or “spice” is a mix of herbs and a chemical compound that’s sold as incense at—coincidentally, we’re sure—the same price as real pot....

(Newser) - Marijuana’s average potency, as measured by the concentration of psychoactive component THC, has broken 10% for the first time after decades of steady increase, a government report says—and is expected to keep increasing, CNN notes. Potency will likely plateau at some 15% in the next 5-10 years, though...

(Newser) - Michael Phelps' lungs—those that secured him enough Olympic gold to start a mint—are made for a stupendous high, reports Slate. They hold twice the smoke of an average human's, speeding up his THC absorption. But at his size (6-foot-4 and 195 pounds), Phelps needs a lot more weed...