Federal Climate Report Predicts At Least 3 Degrees Of Warming By 2100

The United States already warmed on average 1.8 degrees Fahrenheit over the past century and will warm at least 3 more degrees by 2100 unless fossil fuel use is dramatically curtailed, scientists from more than a dozen federal agencies concluded in their latest in-depth assessment.

The 13-agency consensus, authored by more than 300 researchers, found in the second volume of the Fourth National Climate Assessment makes it clear the world is barreling toward catastrophic ― perhaps irreversible ― climate change. The report concluded that warming “could increase by 9°F (5°C) or more by the end of this century” without significant emissions reductions.

“Observations of global average temperature provide clear and compelling evidence the global average temperature is much higher and is rising more rapidly than anything modern civilization has experienced,” said David Easterling, chief of the scientific services division at the National Oceanic and Atmospheric Administration’s National Climatic Data Center in Asheville, North Carolina. “This warming trend can only be explained by human activities, especially emissions of greenhouse gases into the atmosphere.”

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