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Greenland's massive ice sheets contain enough water to raise global sea levels by 23 feet, and a new study shows that they are melting at a rate "unprecedented" over centuries -- and likely thousands of years.The study, published Thursday in the scientific journal Nature, found that Greenland's ice loss accelerated rapidly in the past two decades after remaining relatively stable since the dawn of the Industrial Revolution in the mid-1800s.Today, Greenland's ice sheets are melting at a rate 50% higher than pre-industrial levels and 33% above 20th-century levels, the scientists found.Greenland's melting glaciers may someday flood your city"What we were able to show is that the melting that Greenland is experiencing today is really unprecedented and off the charts in the longer-term context," said Sarah Das, an associate scientist at the Woods Hole Oceanographic Institution and a co-author of the study.To determine just how fast Greenland's ice is retreating compared with the past, scientists used a drill the size of a traffic light pole to take ice core samples.The samples were taken from sites more than 6,000 feet above sea level, giving the researchers a window into melting on the ice sheet over the past several centuries.In the wake of October's dire report from the UN Intergovernmental Panel on Climate Change warning that civilization has just more than a decade to stave off climate catastrophe, Thursday's report spells more bad news for the planet, especially the millions of people living near the world's oceans.Melting from Greenland's ice sheet is the largest single driver of global sea level rise, which scientists predict could swamp coastal cities and settlements in the coming decades.Eight of the 10 largest cities in the world are near coasts, and 40% to 50% of the global population lives in coastal areas vulnerable to rising seas.The study also found that Greenland's ice loss is driven primarily by warmer summer air and that even small rises in temperature can trigger exponential increases in the ice's melt rate."As the atmosphere continues to warm, melting will outpace that warming and continue to accelerate," said Luke Trusel, an assistant professor at Rowan University and study co-author.According to Trusel, the current thought in the scientific community is that there is a temperature threshold that could trigger a point of no return for the eventual melting of Greenland and Antarctica's ice sheets. And though we don't know exactly what that temperature tipping point is, "what's clear is that the more we warm, the more ice melts.""Once the ice sheets reach these tipping points, it's thought that they'll go into a state of irreversible retreat, so they'll be responding to what we do now for centuries and milliennia into the future," Trusel said.What it's like at the ground zero of climate changeDas stressed that although climate science often focuses on the future impacts of warming, the findings show that the climate is already undergoing hugely significant changes."Climate change -- whether it's in Greenland or in your backyard -- is already here and already happening and already impacting people. It's not something that's coming in the future, and this study really drives home that point," she said.The-CNN-Wire? & ? 2018 Cable News Network, Inc., a Time Warner Company. All rights reserved. 3378

Gyms are doing whatever they can to get you back, but many are wondering if it’s safe. A public health expert says it depends on what precautions your gym is taking.“The fact is that the gyms don't spread disease,” said Dr. Jay Wolfson, a public health professor at the University of South Florida. “The people within them who are coming into the gym and not cleaning up after themselves and are not maintaining social distances, and the gym staff, if they're not being attentive and conscientious in terms of disinfecting, are the ones who are aiding a abetting the spread of the disease.”There's evidence showing coronavirus can be spread through aerosol and droplets. Those droplets can float in the air long enough to be inhaled. And they could travel more aggressively when we’re working out.“Just as when you yell and scream, and you'll be sweating, and you'll be hyperventilating sometimes, so those droplet nuclei are going to come out, which means the larger particles are going to rest on some of the equipment as well as in the air,” said Wolfson.Wolfson says it may be hard to monitor gyms across the country because the rules in certain cities and states are different. And it's hard to know if a case is tied to a gym.A Norwegian university looked at whether workout facilities played a role in the spread. It didn't find any cases in people who went to the gym and took proper precautions.Researchers said going to the gym is relatively safe in areas where there aren't many infections. 1509

Gotham's future is in his hands ?? Tim Fox is the Next Batman — meet him before #DCFutureState here ? https://t.co/GbbqM1esgE pic.twitter.com/yXA5fFoUis— Batman (@DCBatman) December 10, 2020 208

HILLSBORO, Ohio — A dramatic security recording from inside the Highland County Common Pleas Court shows an inmate fleeing his own sentencing hearing on foot, evading deputies in the process, on Tuesday morning.According to court records, 34-year-old Nickolaus Kyle Garrison had in August pleaded guilty to a charge of aggravated possession of methamphetamine. He appeared in court Tuesday to receive a sentence of six months from Judge Rocky Coss.The Highland County Press reported Garrison ran when deputies attempted to take him back into custody after his sentencing.The video released by the county shows Garrison running from the courtroom and out into a hallway, pursued by deputies and a court bailiff. As he runs downstairs, the bailiff attempts to jump over the banister and grab him; the bailiff falls, sliding down the stairs on his back, and Garrison escapes.By the end of the week, Garrison was back in custody. He was captured at a motel in Clinton County around 4:30 a.m. Friday by officers and deputies from multiple law enforcement agencies. Garrison will now face additional charges. This story originally reported by Zach McAuliffe on WCPO.com. 1173

Hours after Roseanne Barr blamed her use of sleep medication Ambien for a racist tweet, the makers of the drug responded with a tweet of their own."People of all races, religions and nationalities work at Sanofi every day to improve the lives of people around the world,"  Sanofi US, the makers of Ambien, tweeted. "While all pharmaceutical treatments have side effects, racism is not a known side effect of any Sanofi medication."Dictonary.com's Twitter account also trolled Barr's excuse, tweeting "The name Ambien is thought to come from the word "ambient" or similar words in French. Ambient does not mean "prone to making racist comments," but it does mean "of the surrounding area or environment.""In a since-deleted tweeted on Tuesday night, Barr said she was "Ambien tweeting" when she sent a racist tweet about a former Obama aide Valerie Jarrett on the night of Memorial Day."guys I did something unforgiveable (sic) so do not defend me. It was 2 in the morning and I was ambien tweeting-it was memorial day too-i went 2 far & do not want it defeneded-it was egregious Indefensible. I made a mistake I wish I hadn't but...don't defend it please. ty,