Temperatures at the North Pole could be up to 20 degrees higher than average this Christmas Eve, in what scientists say is a record-breaking heatwave.

Temperatures at the North Pole could be up to 20 degrees higher than average this Christmas Eve, in what scientists say is a record-breaking heatwave. (bbc.com) How is this possible? I heard scientists saying even a 2 degree change (which would take decades) could be catastrophic...

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