While it often feels like the world's going to hell in a Hummer, global warming has a new unlikely byproduct-and it's not all bad. As climates change, certain regions actually stand to benefit from the shift: Where there was ice, there may one day be shipping ports; where agriculture was unsustainable, it may soon thrive. This is not to say that anyone is rooting for global warming-and, in fact, all related studies show the economic toll of global warming to be far weightier than its possible benefits-but some savvy businesses are recognizing the practical realities of a planet in transition. And, it turns out, the smart money is on rising mercury.
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