(wired.com) – For a few months each winter, Canada’s Tibbitt to Contwoyto Winter Road is the world’s longest ice highway, a 300-plus-mile network of frozen lakes that connects lucrative diamond mines in Canada’s Northwest Territories to supplies from the nation’s not-quite-so-far north. But warmer winters and earlier springs have shortened the road’s open season by up to two weeks over the past decade. The loss of the road for even such a short time is very expensive, because the only other way to reach these mines is by air.
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