U.S. report contradicts Trump administration on climate change

A U.S. report by 13 federal agencies says that humans are the main cause of the dramatic global temperature increases observed since the beginning of the 20th century.
By James Carlin | Nov 08, 2017
A comprehensive scientific report issued Friday by 13 federal agencies directly contradicts the Trump administration on climate change and its causes.

The report states unequivocally that planet Earth is undergoing the warmest period in the history of civilization and says that humans are the main cause of the dramatic global temperature increases since the beginning of the 20th century.

"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, in a report by The New York Times. "It begs the question, where are members of the administration getting their information from? They're obviously not getting it from their own scientists."

The report warns that extreme high temperatures will become more prevalent and extreme weather events will likely to be more frequent and more intense. It also places the blame squarely on human activities.

"This assessment concludes, based on extensive evidence, that it is extremely likely that human activities, especially emissions of greenhouse gases, are the dominant cause of the observed warming since the mid-20th century," the report says. "For the warming over the last century, there is no convincing alternative explanation supported by the extent of the observational evidence."

The report was issued as part of the congressionally mandated National Climate Assessment conducted every four years. It is produced through the collaboration of hundreds of climate scientists and other experts within government and academia. It also is peer-reviewed by the National Academy of Sciences.

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