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New pathway proposed for ancient flood

Meltwaters off northwestern Canada’s ice sheet would have shut down the ocean’s heat circulation 13,000 years ago

Natural disasters in the Arctic aren’t always a sign of global warming. A catastrophic deluge of freshwater pouring into the Arctic Ocean from northwestern Canada might have triggered the planet’s last major cold spell nearly 13,000 years ago, a new study finds. That’s a different pathway than the standard explanation for this big chill.

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