We must keep in mind the difference between climate and weather. Climate is the average of weather over at least three decades, which means that specific storms or even individual snowy winters, let alone other types of extreme weather, cannot be considered evidence of either the existence or nonexistence of global warming.

Were the Heavy Storms Last Winter Due to Global Warming?

EarthTalk® is a weekly environmental column made available to our readers from the editors of E/The Environmental Magazine Dear EarthTalk: The U.S. got socked with several major storms this past winter. Local weather reports never mentioned this as odd. But is it a sign of global warming? — R.A. Forbes, via e-mail Weather patterns and trends are notoriously unpredictable, varying…

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