Is today a warmer-than-average day? That seemingly basic question has become fraught in the era of the Anthropocene, as greenhouse gases emitted during a century-plus of fossil fuel use have been warming most everything on our planet. The most common U.S. yardstick for determining whether a given day is unusually warm or cool – NOAA’s … Continue reading Updated yardstick begs question: What’s ‘normal’ in a changing climate?
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