Pablo Blazquez Dominguez/Getty Images; Evaristo Sa/AFP via Getty Images

Greta Thunberg is a 16 year-old environmental activist that has a habit of getting under the skin of world leaders with less than stellar records for their environmental policies.

Previously having drawn the ire of Russian President Vladimir Putin and President Donald Trump, Thunberg is now the target of Brazil's President Jair Bolsonaro.

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Sen. John Cornyn (R-TX) questions U.S. Secretary of State Mike Pompeo during a Senate Caucus on International Narcotics Control hearing on June 11, 2019 in Washington, DC. (Photo by Zach Gibson/Getty Images)

When New York Democratic Senator Chuck Schumer shared information from the climatologists at NOAA about global warming and climate change, people who understand science were concerned. Others, like Republican Senator John Cornyn of Texas, were confused.

Schumer, the Senate Minority Leader, posted:

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Last Week Tonight/YouTube

In Sunday night's Last Week Tonight with John Oliver, the HBO program host enlisted the aid of Bill Nye the Science Guy. Nye—who holds a degree in mechanical engineering from Cornell—is best known for teaching children the basics of science on his Emmy winning television show.

But his appearance on HBO Sunday was strictly for the adults. Oliver asked Nye to explain carbon pricing as it relates to climate change and global warming.

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Earth as seen from space

25 years ago, the Union of Concerned Scientists sent a Letter to Humanity, backed by 1,700 signatures, warning of the dangers human behavior presents to our climate and ecosystem on Earth. Now 15,000 scientists say it's much worse.

Environmental experts from around the world signed the updated "warning to humanity" about the dangers to all of us. These scientists say the picture looks far more bleak than it was in 1992. Humanity exacerbated almost all of the problems identified in the original warning.

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Fears that both scientists and environmentalists had hoped were irrational may well become reality amidst the ongoing catalog of Trump administrative proposals.

Some of these proposals are the Trump administration’s decision to closely scrutinize studies and data from the United States Environmental Protection Agency (EPA), as well as a forced gag order blocking communication between EPA scientists and the public and press.

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