A team of salvage divers has discovered an unexplained object resting at the bottom of the Baltic Sea near Sweden. "This thing turned up. My first reaction was to tell the guys that we have a UFO here on the bottom," said Peter Lindberg, the leader of the amateur treasure hunters. Sonar readings show that the mysterious object is about 60 meters across, or, about the size of a jumbo jet. And it's not alone. Nearby on the sea floor is another, smaller object with a similar shape. Even more fascinating, both objects have "drag marks" behind them on the...