In May 2011 the US National Academy of Sciences declared that “Climate change is occurring, is very likely caused by human activities, and poses significant risks for a broad range of human and natural systems. Each additional ton of greenhouse gases emitted commits us to further change and greater risks…. The environmental, economic, and humanitarian risks of climate change indicate a pressing need for substantial action to limit the magnitude of climate change and to prepare to adapt to its impacts.” One hundred other national and international scientific organizations agree with the NAS. How many disagreed? None. Zero. Zilch. As one scientist put it, “There’s a better scientific consensus on this than on any issue I know—except maybe Newton’s second law of dynamics.”
One organization that does dispute the NAS and the world consensus on global warming is the US House of Representatives. In April, the House took up a bill to remove the power of the Environmental Protection Agency to regulate greenhouse gases, opening a new front in the Republican War on Science (title of a great book by Chris Mooney). Rep Henry Waxman (D-CA) offered a countering amendment with language nearly identical to that of the Academy: “Congress accepts the scientific findings of the Environmental Protection Agency that climate change is occurring, is caused largely by human activities, and poses significant risks for public health and welfare.” The amendment failed 184-240, with one Republican voting in favor and three Democrats against.