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Protestors at a "Stand up for Science" rally. Photo: Jessica Rinaldi/The Boston Globe via Getty Images.

In recent interviews, President Trump falsely claimed that scientists disagree about the causes of global warming. In fact, at least 97% of climate scientists agree that human activities are the dominant cause of global warming since the mid-20th century.

The big picture: President Trump is not the only one who thinks that the main causes of global warming are still being debated. According to polling from George Mason University's Center for Climate Change Communication, even those Americans who say they are concerned about climate change tend to significantly underestimate the strength of the scientific consensus.

The details: In an interview with the AP on Oct. 15, President Trump commented on a recent climate science report from the UN Intergovernmental Panel on Climate Change. The report, released Oct. 8, warned of potentially catastrophic consequences, such as the loss of the entire Greenland Ice Sheet, if warming surpasses 1.5°C, or 2.7°F, above preindustrial levels.

Trump dismissed the findings, saying scientists disagree about the basic conclusion of what is driving global warming:

"I mean, you have scientists on both sides of it. My uncle was a great professor at MIT for many years. Dr. John Trump. And I didn’t talk to him about this particular subject, but I have a natural instinct for science, and I will say that you have scientists on both sides of the picture."

Reality check: Studies show that the period from 1901 to 2016 "is now the warmest in the history of modern civilization," and human emissions of greenhouse gases are to blame.

"For the warming over the last century, there is no convincing alternative explanation supported by the extent of the observational evidence."
U.S. Global Change Research Program Climate Science Special Report, 2017

Yes, but: Like the president, the American public seems to have a poor understanding of just how wide and deep the scientific consensus is on what is causing climate change.

The bottom line: There is evidence showing that when people gain a better understanding of the consensus, they are more likely to support policies to rein in greenhouse gas emissions. George Mason's Ed Maibach, who leads the Center for Climate Change Communication, told Axios that this is known as the "Gateway Belief Model."

"We’ve conducted more than a half dozen research studies — involving more than 10,000 Americans — to answer the question: Does it matter if people know the extent of the consensus among climate scientists about human-caused global warming?  The answer is yes, it matters a lot."
— Ed Maibach, George Mason University

Maibach added that, as Trump and others question the existence of a consensus among climate experts, they are sowing doubt in the minds of many Americans. "Regrettably, as they spread this misinformation, some members of the public accept this misinformation as true," he told Axios.

Go deeper

Updated 1 hour ago - Politics & Policy

Officer Kim Potter arrested, charged with manslaughter in Daunte Wright's death

Kim Potter's booking photos. Photo: Hennepin County Sheriff's Office

Kim Potter, the former police officer charged with second-degree manslaughter in the fatal shooting of Daunte Wright, was released on a $100,000 bond on Wednesday, Hennepin County jail records show.

Why it matters: Sunday's shooting of the 20-year-old Black man in Brooklyn Center, Minnesota, just 10 miles from where George Floyd was killed by a Minneapolis police officer last year, has reinvigorated Black Lives Matter protests and led to three consecutive nights of unrest.

Biden names Erika Moritsugu as senior AAPI liaison

Erika Moritsugu. Photo courtesy: National Partnership for Women & Families

President Biden has named Erika Moritsugu as deputy assistant to the president and Asian American and Pacific Islander senior liaison, the White House announced Wednesday.

Driving the news: The decision follows weeks of pressure from AAPI leaders to include more Asian American representation at the Cabinet level and in senior administration roles.

Matt Gaetz targets CNN in new ad amid sexual misconduct claims

Rep. Matt Gaetz in Doral, Florida, last week. Photo: Joe Raedle/Getty Images

Rep. Matt Gaetz (R-Fla.) announced Wednesday a six-figure ad buy for a spot that takes aim at CNN as part of an offensive to hit back at mounting sexual misconduct allegations, Politico first reported.

Driving the news: Gaetz is under federal investigation following sex trafficking allegations, and the House Ethics Committee has also opened an inquiry. Announcing the 30-second ad, to run in his Florida Panhandle district, Gaetz called on his Twitter followers to "help us fight back!"

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