John McCain says he'll battle global warming as fiercely as he fought money in politics. But will his fellow Republicans join the crusade? atthew Stembridge graduated from Dartmouth College in May of 1999. He returned the next winter wearing red tights over orange long johns, a red knit stocking cap, yellow-painted galoshes that reached midcalf, and a red curtain -- his cape -- draped around his neck. "We were doing this global warming campaign for the presidential primaries, young people all across New Hampshire," says Stembridge. "I was Captain Climate, sent back from the future to educate our leaders so...