中山大便中带血丝(中山大便后有一点血) (今日更新中)

SAN DIEGO — A man has died after falling into a river at Yosemite National Park on Christmas Day.Few details about the man's death were released Friday by the park. A park spokesman told the Associated Press that a statement was not issued sooner and the investigation was taking longer than usual because of the government shutdown.The man reportedly suffered a head injury on December 25 in the Silver Apron area, between Vernal and Nevada Falls, according to ABC affiliate 488

SpaceX launched 60 more mini internet satellites late Monday, this time testing a dark coating to appease stargazers.It’s a “first step” compromise between SpaceX and astronomers fearful of having dark skies spoiled by hundreds and, eventually, thousands of bright satellites circling overhead.The Falcon 9 rocket blasted into a cold, clear night sky, recycled by SpaceX for its fourth flight. As the first-stage booster flew to a vertical landing on an ocean platform, the Starlink satellites continued hurtling toward orbit to join 120 similar spacecraft launched last year. Flight controllers applauded, and the launch commentator described the booster’s fourth touchdown as “awesome.” An hour later, all 60 satellites were free of their upper stage and making their own way in orbit. “It’s a beautiful sight,” the commentator observed.His Starlink fleet now numbering 180, SpaceX founder and chief executive Elon Musk plans to ultimately launch thousands of these compact flat-panel satellites to provide global internet service. Each spacecraft is just 575 pounds (260 kilograms).After the first Starlink batch of 60 was launched in May and the second in November, astronomers complained how the bright satellite chain was hampering their observations. In response, SpaceX came up with a darkening treatment to lessen reflectivity. The coating is being tested on one of the newly launched satellites.Jeff Hall, director of the Lowell Observatory in Flagstaff, Arizona, said the Starlinks have been just an occasional problem — so far — but noted the risk to stargazing will grow as the constellation expands and other companies launch their own fleets. He heads the American Astronomical Society’s committee on light pollution, space debris, and radio interference, and is working with SpaceX on the issue. The matter is on the agenda, in fact, at the society’s conference in Hawaii this week.“Anything that darkens the satellites is a step in the right direction,” Hall said in an email Monday. He said it’s too soon to know whether the dark coating will work, “but it definitely is just a first step and not enough to mitigate the issues astronomy will experience with the Starlinks.”The Starlinks are initially placed in a relatively low orbit of 180 miles (290 kilometeters), easily visible as a long, strung-out cluster parading through the night sky. Over a few months, krypton-powered thrusters raise the satellites to a 340-mile (550-kilometer) orbit. The higher the orbit, the less visible the satellites are from the ground, according to SpaceX. Even so, SpaceX said it’s supplying astronomy groups with the satellite coordinates in advance, so they can avoid the bright flyover times.Already established in launching satellites for others and making space station deliveries for NASA, SpaceX is among several companies looking to provide high-speed, reliable internet service around the world, especially in places where it’s hard to get or too expensive. Others include Jeff Bezos’ Amazon and OneWeb. SpaceX may start service later this year in the northern U.S. and Canada, then expand to the world’s most populated areas after 24 launches. 3170

Serena Williams moved into a 10th US Open final and picked up a record-equaling 101st win in New York by routing Elina Svitolina 6-3, 6-1 but the number she might still be preoccupied with is 24.Collecting a 24th major Saturday would tie the American with Margaret Court for tennis' all-time lead, and the 37-year-old is hoping to get over the finish line after losing three grand slam finals in a row -- which had never previously happened in her storied three-decade career.The latest setback occurred at Wimbledon in July, when Williams was stopped thanks largely to the brilliance of Simona Halep. The Romanian committed a miniscule three unforced errors in the final.Svitolina is a similar type of counterpuncher, but the fifth seed from Ukraine paid the price for not capitalizing on her early opportunities under the lights of Arthur Ashe stadium.The Wimbledon semifinalist earned three break points straight away, didn't convert, then was broken from 40-0 to trail 2-0. Those first two games took an extended 15 minutes.There was more woe for Svitolina and her player box -- which included her boyfriend, Gael Monfils, who lost in the quarterfinals Wednesday -- when she couldn't break from 40-0 on the Williams serve at 3-1.That really was her last chance to gain a foothold. Not long after, Williams booked a spot in the final almost exactly 20 years after appearing in her first grand slam final at the 1999 US Open. That gap is a record -- another record she owns.Svitolina won the last time they faced off, though Williams was suffering from a shoulder injury back then at the Rio Olympics in 2016.Williams tied Chris Evert for top spot in US Open victories. She has spent an economical one hour, 54 minutes combined on court in her last two matches, crushing China's Wang Qiang in the quarterfinals and surrendering only one set en route to the final.Williams moving greatPutting a knee injury behind her, Williams moved supremely well at the Rogers Cup in Toronto in August and looks to have overcome the back injury that forced her to retire in that final against Bianca Andreescu as well as the rolled ankle she sustained this week against Petra Martic.She patrolled the court sublimely to bring up a break point at 1-1 in the second and even, rarely for her, served and volleyed.Williams could face the 19-year-old Canadian upstart again if Andreescu tops Belinda Bencic in the second semifinal. Andreescu or Bencic will be appearing in a first grand slam final.It's all going so well for Williams but the question indeed is whether she can produce in the final and win a major for the first time since becoming a mom to daughter Olympia almost exactly two years ago.Williams was once unbeatable in grand slam finals, winning eight straight from 2012-2015.But twelve months ago, she controversially fell to Naomi Osaka at Flushing Meadows.Though they lack in experience, the crafty pair of Bencic or Andreescu shouldn't be taken lightly.No one has tallied more top-five or top-10 wins this season than former teen prodigy Bencic -- who beat Williams in 2015 and Osaka this week -- while 15th-seed Andreescu has won 12 straight matches, and 22 if you discount a retirement loss to Anett Kontaveit in Miami in March. 3244

Sales of medical marijuana in Michigan have exceeded million in four months, according to the State Department of Licensing and Regulation.The sales come from 54 licensed dispensaries since the first one opened at the beginning of November.Nearly 8,700 pounds of medical marijuana have already been sold, meaning .5 million will be going to the state from a 6 percent sales tax.Once dispensaries are approved to sell to recreational users, total sales are expected to top a billion dollars a year in Michigan. 527

Residents in Freeport, Grand Bahamas woke up to severely flooded neighborhoods on Tuesday following the devastation left by Hurricane Dorian. United Nations officials estimate more than 60,000 people in the northwest Bahamas will need food following the catastrophic natural disaster. Tim Aylen, a Bahamian journalist assisting The Associated Press with the hurricane coverage, had to abandon his home with his family due to the flooding. Speaking about some of his work, Aylen said he had no idea he would be shooting pictures of himself and his family evacuating their home as part of his coverage. Early Tuesday, Aylen could be seen wadding through chest-level flood waters as he made his way through the streets of Arden Forest in Freeport.His 21-year-old daughter Julia Aylen, and 17-year-old son Matthew Aylen, along with their three dogs were seeking higher ground Tuesday morning, with images showing their exhaustion from the ordeal. A spokesman for the International Federation of Red Cross and Red Crescent Societies said Tuesday about 45% of homes in Grand Bahama and Abaco were severely damaged or destroyed.The organization was aiming help 20,000 of the most vulnerable people, including a large Haitian community, the spokesman said. 1260

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