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This winter has been unusually warm, crippling ski resorts, ruining holiday traditions, and dashing hopes of a white Christmas across the northern hemisphere. While the billions of tons of greenhouse pollution in our atmosphere sometimes encourage freak snowstorms, the primary effect of global warming on winter is, well, warmer temperatures — making white Christmases less likely. Temperature increases in some regions were off the charts in November, with northern Norway about 10°F warmer than average. In Finland, snow has been replaced by rain, killing World Cup and European Cup ski races, hurting retail sales, and adding to the gloom people feel from the long winter dark. This “black Christmas” shows the “footprint of global warming“: READ MORE
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