NPR: “It is “extremely likely” that human activities are the “dominant cause” of global warming, according to the most comprehensive study ever of climate science by U.S. government researchers. The climate report, obtained by NPR, notes that the past 115 years are “the warmest in the history of modern civilization.” The global average temperature has increased by about 1.8 degrees Fahrenheit over that period. Greenhouse gases from industry and agriculture are by far the biggest contributor to warming. The findings contradict statements by President Trump and many of his Cabinet members, who have openly questioned the role humans play in changing the climate. “I believe that measuring with precision human activity on the climate is something very challenging to do,” EPA Administrator Scott Pruitt said in an interview earlier this year. “There’s tremendous disagreement about the degree of impact.” That is not consistent with the conclusions of the 600-plus-page Climate Science Special Report [Note – this is where it will be posted when officially released], which is part of an even larger scientific review known as the fourth National Climate Assessment. The NCA4, as it’s known, is the nation’s most authoritative assessment of climate science. The report’s authors include experts from leading scientific agencies, including the National Oceanic and Atmospheric Administration, NASA and the Department of Energy, as well as academic scientists…”
AP links to the reports – “A massive U.S. report concludes the evidence of global warming is stronger than ever, contradicting a favorite talking point of top Trump administration officials, who downplay human’s role in climate change. The report released Friday is one of two scientific assessments required every four years. A draft showing how warming affects the U.S. was also published…”
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