Global cooling?

Arctic sea ice might have started rebuilding after reaching a record low, according to the National Snow and Ice Data Center. Arctic ice now covers 1.61 million square miles, the agency said yesterday, up from 1.59 million Sept. 16, which appears to be the minimum. Some variability could still occur, however, the agency cautioned. The Northwest Passage between the Atlantic and Pacific oceans along the coasts of Canada and Alaska remains open but is starting to refreeze, the center said.

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