Pass the Doritos, Man

Scientists have finally answered the question that has plagued mankind for centuries, or at least since the golden age of Up In Smoke: what gives people the munchies when they smoke pot? Researchers have identified the area in the brain where THC is active in stimulating appetite. And this isn't just useful as as an interesting tidbit to impress your stoner friends - they anticipate using this knowledge in designing drugs to combat obesity and anorexia.