A few years ago a man and his son discovered a black bear prowling outside their home in Two Rivers, Alaska. In that neighborhood, it's common to hear stories of bears smashing cabin windows, drawn by the smell of a candy-bar wrapper. In defense against such invaders, many Alaskans dispose of their garbage assiduously and keep jumbo cans of pepper spray next to their car keys. In this case, the man called 911, and shortly thereafter an Alaska State Trooper pulled into the driveway. The trooper asked a few questions, but on the whole, seemed unreasonably calm about the whole situation. With the citizens at a safe distance, the trooper called out sharply a few times, and the bear came bounding from the bushes, lunged at the trooper, and seized his leg in its paws. Rather than sinking in its teeth, however, the bear simply clung to the leg, trembling a bit. Moments later, it followed the trooper into the patrol car. The trooper's name is Ron Richards, and the bear's name is D...