郑州郑州市眼科研究所(郑州眼睛近视能手术多少钱) (今日更新中)

NASA released data on Monday indicating that the polar ice cap around the North Pole shrank to near record-low levels last week following an arctic heat wave.The ice began to melt in earnest as Siberia was an estimated 14 to 18 degrees above normal during the spring.“It was just really warm in the Arctic this year, and the melt seasons have been starting earlier and earlier,” said Nathan Kurtz, a sea ice scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “The earlier the melt season starts, the more ice you generally lose.”The white color of ice causes sunlight to be reflected. But when the ice melts, the ground absorbs more sunlight, which causes the earth to heat up.2020 marked only the second time on record that the minimum sea ice dropped below 1.5 million square miles.“As the sea ice cover extent declines, what we’re seeing is we’re continuing to lose that multiyear ice,” said Mark Serreze, director of National Snow and Ice Data Center. “The ice is shrinking in the summer, but it’s also getting thinner. You’re losing extent, and you’re losing the thick ice as well. It’s a double whammy.” 1138

More than 150 medical experts, scientists, teachers, nurses and others have signed on to an open letter calling on U.S. leaders to “shut it down, start over, do it right,” asking for the country to be locked down again to control the spread of the coronavirus.The letter appears on the U.S. Public Interest Research Groups website and is addressed to “decision makers” and recognizes how the country shutdown in March to stop the spread. There were early signs of decreasing infection rates.“You didn’t use the time to set us up to defeat the virus. And then you started to reopen anyway, and too quickly. Right now we are on a path to lose more than 200,000 American lives by November 1. Yet, in many states people can drink in bars, get a haircut, eat inside a restaurant, get a tattoo, get a massage, and do myriad other normal, pleasant, but non-essential activities,” the letter reads.The letter goes on to talk about suggested standards before businesses and non-essential locations can open, including lower infection rate and the capacity to test and track cases.“If you don’t take these actions, the consequences will be measured in widespread suffering and death,” the letter says.This comes as the U.S. reaches above 4 million cases of coronavirus Thursday.According to the Centers for Disease Control and Prevention, Covid-19 "will end up as a Top 10 leading cause of death" this year, statisticians predicted in an email to CNN.Heart disease and cancer are the two leading causes of death in the US, accounting for more than half of all US deaths each year, and the statisticians don't expect that to change.Editor's note: A previous version of this story incorrectly stated that U.S. PIRG was founded in 1984 when it was actually started in 1983. 1769

NASHVILLE, Tennessee — Opry Mills mall in Nashville announced plans to reopen Friday, one day after a shooting claimed the life of a 22-year-old man. The mall will reopen at 10 a.m. local time – fewer than 24 hours after a murder investigation began inside the building. There will be an enhanced Metro Nashville Police presence to ensure that shoppers and staff feel safe. The shooting happened just before 2:30 p.m. local time Thursday inside a hallway near the Auntie Anne's pretzel shop, just across from Old Navy. The victim, Demarco Churchwell, was taken to TriStar Skyline Medical Center, where he later died. Police said the gunman is 22-year-old Justin Golson. He's been charged with homicide. As soon as shots were fired, shoppers scattered, terrified after hearing those gunshots.  "I thought I was going to die, I thought I was never going to see my husband or daughter again,” one woman said. Churchwell and the alleged shooter apparently knew each other. Police said the shooting was the result of an ongoing fight between them.  1111

MINNEAPOLIS — A truck driver who drove into a large crowd of protesters on a bridge in Minneapolis following the killing of George Floyd has been charged with two criminal counts.Prosecutors charged 35-year-old Bogdan Vechirko, of Otsego, Minnesota, on Thursday with making threats of violence and criminal vehicular operation.On May 31, Vechirko drove his fuel tanker truck through a crowd of protesters who had shut down a bridge on I-35 in Minneapolis. Even though thousands of pedestrians were on the bridge, Vechirko continued to pull forward.Video from the incident shows that one protester stumbled near the truck, and that's when Vechirko says stopped out of caution. Protesters then attacked him and vandalized his truck.The Star Tribune reports that the charges allege he sought to "scare" protesters out of his path. In addition, the charges also allege a re-enactment with a similar truck showed he would have had plenty of time to stop after seeing the crowd on the highway.Vechirko claimed he was returning from a fuel delivery south of the city and didn't mean to drive through the protests. He also claims that he wouldn't have been able to immediately stop the truck ahead of the crowd without the use of a handbrake that could have caused it to jackknife and cause further injuries. 1308

MISSION VALLEY, Calif. (KGTV) - About 100 military family members spent Thanksgiving at Dave and Busters, hosted by Lincoln Military Housing.The event was for families with service members currently deployed.Families enjoyed a full Thanksgiving meal and even got free game tokens to enjoy the arcade. 308

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