Chicago Tribune: It wasn’t long ago that thousands of moose roamed the gentle terrain of northwestern Minnesota, affirming the iconic status of the antlered, bony-kneed beast from the North Woods. In just two decades, though, their numbers have plummeted, from 4,000 to fewer than a hundred. They didn’t move away. They just died. The primary culprit in what is known as the moose mystery, scientists say, is climate change, which has systematically reduced the Midwest’s already dwindling moose …