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Greenland ice sheet melting faster than thought: study

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Greenland’s ice sheet may have completely melted within the next millennium if greenhouse gas emissions continue at their current rate, according to a new study with implications for sea-level rise around the world.

The Greenland ice sheet holds the equivalent of seven meters (yards) of sea level.

“If we continue as usual, Greenland will melt,” said lead author Andy Aschwanden, a research associate professor at the University of Alaska Fairbanks’ Geophysical Institute.

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It is the most recent warning about warming in the world’s coldest regions.

“What we are doing right now in terms of emissions, in the very near future, will have a big long-term impact on the Greenland ice sheet, and by extension, if it melts, to sea level and human society,” Aschwanden said.

The study, which used data from NASA’s Operation IceBridge airborne campaign and was published in Science Advances, is the latest to suggest a much greater rate of melt than was estimated by older models.

The model relies on more accurate representations of the flow of “outlet glaciers,” river-like bodies of ice that connect to the ocean.

“Outlet glaciers play a key role in how ice sheets melt, but previous models lacked the data to adequately represent their complex flow patterns,” NASA said in a statement about the study.

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“The study found that melting outlet glaciers could account for up to 40 percent of the ice mass lost from Greenland in the next 200 years.”

As ocean waters have warmed over the past two decades, they have melted the floating ice that once shielded the outlet glaciers.

As a result, “the outlet glaciers flow faster, melt and get thinner, with the lowering surface of the ice sheet exposing new ice to warm air and melting as well.”

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In the next 200 years, the ice sheet model shows that melting at the present rate could contribute 48 to 160 centimeters (19 to 63 inches) to global sea level rise, 80 percent higher than previous estimates.

In October, the UN’s Intergovernmental Panel for Climate Change (IPCC) reported that avoiding global climate chaos will require a major transformation of society and the world economy that is “unprecedented in scale,” and warned time is running out to avert disaster.

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Trump wants Ric Grenell to keep his ambassador job while also overseeing every intelligence agency: report

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On Wednesday, President Donald Trump was reported to be planning to appoint U.S. Ambassador to Germany Richard Grenell to serve as acting Director of National Intelligence — a position for which he has zero qualifications. The move raised immediate fears, given that Grenell is a hardline Trump loyalist.

But it doesn't stop there. Reports also suggest that the president intends for Grenell to keep serving as Ambassador to Germany at the same time as he is overseeing every U.S. intelligence agency.

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‘You lost me’: Alexandria Ocasio-Cortez graciously defuses confrontational question

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In an appearance on ABC's popular daytime talk show "The View" Wednesday, Rep. Alexandria Ocasio-Cortez spoke about what she called a "disconnect" between centrist, establishment members of the Democratic Party and progressive lawmakers who have been viewed as agitators in the party.

Co-host Whoopi Goldberg said that while she had applauded Ocasio-Cortez's surprise victory in her 2018 primary against Wall Street-backed former Rep. Joe Crowley, she has since cooled on the lawmaker due to what she views as a dismissal of baby boomers' past activism. Ocasio-Cortez has pushed House Speaker Nancy Pelosi (D-Calif.) to back a Green New Deal, called on her fellow Democrats to support Medicare for All, and criticized Democrats who take big-money donations from the financial, for-profit healthcare, and fossil fuel sectors.

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Security experts sound the alarm on Russian interference in the 2020 election: Their campaign is ‘underway’

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Cybersecurity experts have been warning that it isn’t a question of whether or not the Russian government under President Vladimir Putin will try to interfere in the United States’ 2020 election — it’s a question of how successful they will be and the ways in which they will make an attempt. Three security experts (Alex Finley, John Sipher and Asha Rangappa) address this concern in a February 19 article for Just Security, warning that troubling vulnerabilities remain in the United States’ election system.

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