Somewhere right now, in some remote farm, maybe in the Midwest or clear on the other side of the globe, a sheep is rubbing obsessively against fence posts and barbed wire, as if trying to reach some incessant itch. The sheep will scratch itself until its wool disappears, right down to the skin, and then to the bone if no one stops it. It's terrible for the sheep but perhaps fortuitous for human beings. Because of the sheep's self-destructive behavior, scientists with Scripps Research Institute may someday find a cure for one of modern day's most... More >>>