D.C. Circuit

Wed, 2012-06-27 12:10Chris Mooney
Chris Mooney's picture

A Court's Scientific Smackdown: The D.C. Circuit Trashes Science Deniers on Global Warming and the EPA

Tomorrow, we may see a court—the highest in the land–flout precedent for partisan ends in its ruling on President Obama’s signature health care law.

However, in the meantime, we can rejoice that the U.S. Court of Appeals for the District of Columbia Circuit understands how to weigh complicated science-policy issues without partisanship or bias.

The D.C. Circuit recently came down with a long expected ruling on an industry and state attorneys general challenge to the EPA’s Endangerment Finding, as well as a number of other actions regarding greenhouse gas regulations. These representatives of red states (including Ken Cuccinelli) and affected corporations argued that EPA was in the wrong to determine that greenhouse gases endanger public health and welfare, and thus must be regulated. Rather, they argued, EPA had come up with an arbitrary and capricious reading of climate science—and was set to unleash an onerous regulatory regime on this misguided basis.

To put it simply, for this charge to be true, all the experts on global warming would have to be wrong. Because that’s precisely who EPA relied on—including the IPCC, the U.S. Global Change Research Program, and the National Academy of Sciences.

What the D.C. Circuit opinion does, basically, is to show that EPA is absolutely right to trust the experts, and to ignore the deniers, in deciding what the science of global warming says. That makes the D.C. Circuit opinion a resounding defense of science and its relevance to policy—in many ways on a par with other such legal classics, like Judge Jones’ decision in the Dover evolution trial.

Perhaps most quotable is the court’s devastating retort to the idea that EPA shouldn’t be relying on expert scientific assessments to make its judgment about whether humans are causing global warming:

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