Western Greenland. Photo: Sean Gallup/Getty Images

Greenland's ice sheet has melted beyond the point of no return, contributing to rising ocean levels, a new study published in the journal Nature Communications Earth and Environment finds.

Why it matters: Even if global warming were to stop imminently, annual snowfall that replenishes the ice sheet cannot keep pace with the ice that is flowing into the ocean from glaciers.

What they found: Scientists analyzed the satellite data of more than 200 glaciers across the Arctic territory spanning nearly 40 years through 2018, finding that the ice sheet shrank so quickly that snowfall could not keep up with the rate of melting from parts of the glacier exposed to warming ocean water.

  • The study also found that the ice sheet is retreating in bursts, resulting in a swift and unpredictable rise in sea levels.
    • Greenland contributes 280 billion metric tons of melting ice into the ocean each year, making it the largest physical source of rising ocean levels.

What they're saying: "The ice sheet is now in this new dynamic state, where even if we went back to a climate that was more like what we had 20 or 30 years ago, we would still be pretty quickly losing mass," Ian Howat, co-author of the study and a professor at Ohio State University, said, per CNN.

  • "We've passed the point of no return but there's obviously more to come," Howat said. "Rather than being a single tipping point in which we've gone from a happy ice sheet to a rapidly collapsing ice sheet, it's more of a staircase where we've fallen off the first step but there's many more steps to go down into the pit."

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Biden: The next president should decide on Ginsburg’s replacement

Joe Biden. Photo: Drew Angerer / Getty Images

Joe Biden is calling for the winner of November's presidential election to select Ruth Bader Ginsburg's replacement on the Supreme Court.

What he's saying: "[L]et me be clear: The voters should pick the president and the president should pick the justice for the Senate to consider," Biden said. "This was the position the Republican Senate took in 2016 when there were almost 10 months to go before the election. That's the position the United States Senate must take today, and the election's only 46 days off.

Trump, McConnell to move fast to replace Ginsburg

Photo: Alex Wong/Getty Images

President Trump will move within days to nominate his third Supreme Court justice in just three-plus short years — and shape the court for literally decades to come, top Republican sources tell Axios.

Driving the news: Senate Majority Leader Mitch McConnell and Senate Republicans are ready to move to confirm Trump's nominee before Election Day, just 46 days away, setting up one of the most consequential periods of our lifetimes, the sources say.

Updated 2 hours ago - Politics & Policy

Coronavirus dashboard

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  2. U.S.: Total confirmed cases as of 10 p.m. ET: 6,722,699 — Total deaths: 198,484 — Total recoveries: 2,556,465 — Total tests: 92,163,649Map.
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  6. Education: At least 42% of school employees are vulnerable.