U.S. Report Says Humans Cause Climate Change, Contradicting Top Trump Officials – The New York Times

U.S. Report Says Humans Cause Climate Change, Contradicting Top Trump Officials – The New York Times

Saturday, November 4, 2017

2:48 AM

Clipped from: https://www.nytimes.com/2017/11/03/climate/us-climate-report.html

Photo

Smoke rose from trees burned in a wildfire in Wrightwood, Calif., last year. A report from 13 federal agencies says extreme weather events have cost the United States $1.1 trillion since 1980. Credit Jonathan Alcorn/Agence France-Presse — Getty Images

WASHINGTON — Directly contradicting much of the Trump administration’s position on climate change, 13 federal agencies unveiled an exhaustive scientific report on Friday that says humans are the dominant cause of the global temperature rise that has occurred since the start of the 20th century, creating the warmest period in the history of civilization.

Over the past 115 years global average temperatures have increased 1.8 degrees Fahrenheit, leading to record-breaking weather events and temperature extremes, the report says. The global, long-term warming trend is “unambiguous,” it says, and there is “no convincing alternative explanation” that anything other than humans — the cars we drive, the power plants we operate, the forests we destroy — are to blame.

The report was approved for release by the White House, but the findings come as the Trump administration is defending its climate change policies on several fronts. The United Nations convenes its annual climate change conference next week in Bonn, Germany, and the American delegation is expected to face harsh criticism over President Trump’s decision to walk away from the 195-nation Paris climate accord and top administration officials’ stated doubts about the causes and impacts of a warming planet.

“This report has some very powerful, hard-hitting statements that are totally at odds with senior administration folks and at odds with their policies,” said Philip B. Duffy, president of the Woods Hole Research Center. “It begs the question, where are members of the administration getting their information from? They’re obviously not getting it from their own scientists.”

While there were pockets of resistance to the report in the Trump administration, there was little appetite for a knockdown fight over climate change among Mr. Trump’s top advisers, who are intensely focused on passing a tax reform bill — an effort they think could determine the fate of his presidency.

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