Park City, Utah, commissioned a study a couple of years ago that scared the ice out of residents. The study projected that temperatures could rise 6 to 15 degrees by the end of the century, creating a snowless Park City. It's not hard to see how global warming could severely impact skiing and snowboarding — warmer weather means a later start and an earlier end to the season, not to mention less snow, both of the natural and man-made varieties. On the campaign trail in 2008, then-candidate Barack Obama warned New Hampshire residents that global warming could cut into ski industry jobs, a message that more ski executives are beginning to heed. Many resorts are jumping into green energy and starting to lobby for climate change legislation.