梅州宫颈炎由什么引起的(梅州做流产应该注意哪些) (今日更新中)

Bird populations in the United States and Canada have dropped by 29% since 1970, signifying 2.9 billion birds lost in almost 50 years, according to a new study.The scientists involved in the study warn that like a canary in a coalmine, birds reveal environmental health. This steep loss of bird populations, including some of the most common birds like sparrows and finches, shows that human impacts on the continent's environment mean it can no longer support the wildlife systems it once did.Normally, it's hard to track animal populations this way. But birds are much easier to monitor. The study combines almost 50 years of data, including information collected by citizen scientists and weather radar data of migratory birds from 143 stations across North America. Observations by people were shared with the North American Breeding Bird Survey at the US Geological Survey, the Canadian Wildlife Service, the Audubon Christmas Bird Count and Manomet's International Shorebird Survey."Citizen-science participants contributed critical scientific data to show the international scale of losses of birds," said John Sauer, study co-author at the US Geological Survey. "Our results also provide insights into actions we can take to reverse the declines."The study was published Thursday in the journal 1315

As speculation has grown in recent weeks on the status of this month's NCAA Men's and Women's Basketball Tournaments, Sr. Vice President of NCAA Basketball Dan Gavitt said in an interview on Sunday that the NCAA is "definitively planning" on the tournaments being held as scheduled, in front of spectators. The men's basketball tournament will be played in 14 different venues from coast to coast. Most of the venues will be full with 15,000 to 20,000 spectators at any one time. Mercedes-Benz Stadium in Atlanta, host of this year's Men's Final Four, could see crowds of more than 70,000. Largely, sports in the United States have remained unaffected by the coronavirus, while other major events and concerts have been canceled or postponed nationwide. Sporting events in overseas are opting to take a different direction, as several European leagues are playing matches in closed stadiums. Professional baseball in Japan has been curtailed amid coronavirus fears. One major event that did cancel was the BNB Paribas Open in Palm Springs, California. But the tennis event so far has been an outlier. Gavitt told CBS that the NCAA has an advisory panel that is in contact with the CDC on a daily basis. He said the NCAA's group of experts are monitoring events on a daily basis. "The guidance we're getting from our experts is playing without fans is not called for," Gavitt said on CBS. One change sports leagues have taken is one many fans might not notice. The NBA, NHL, MLB and MLS jointly announced on Monday that locker rooms will be closed to journalists. Despite community spread of COVID-19 in the Seattle area, the Seattle Sounders of the MLS played in front of an announced crowd of over 33,000, marking one of the largest ticketed sporting events in the United States in recent weeks. At Saturday's game versus the Columbus Crew, additional hand sanitation stations were installed. Although the game went on as planned, Saturday's crowd was the smallest for a Sounders game in more than a decade. The game concluded with players shaking hands, despite advice from health officials to conduct social distancing. 2135

An incoming University of Southern California freshman died in a freeway accident over the weekend, the university confirmed in a Monday statement.Eighteen-year-old Matthew Olson was walking south on Interstate-110 when he was hit by two cars at around 2:43 a.m. on Saturday, according to a news release from the California Highway Patrol.Olson was pronounced dead at the scene by the Los Angeles Fire Department Paramedics, CHP said. He was walking on I-110 between two FasTrak lanes, according to the release."It is unknown at this time why (Olson) was walking in the freeway lanes," the release says.One person has been arrested, according to a CHP report.The incident is still under investigation.He was from Newport Beach and had graduated from Corona del Mar High School. There, he played basketball and was a member of the 2018 National Championship volleyball team, earning the Coach's Award for Hardest Working Player, the university said.Olson also participated in Future Business Leaders of America and Best Buddies, "a one-to-one relationship program that fosters friendships with individuals with intellectual and developmental disabilities," according to the university."Matt had only just begun his USC experience at the Marshall School of Business," the university said. "But his life and the fact that he chose to join our community can still be an example for us all.""Whatever your circumstances and wherever this new semester may take you, we ask that you please keep Matt and his family in your thoughts and prayers."A Facebook group for the Corona del Mar Sea Kings Boys Basketball team posted a message Saturday night saying they were "devastated" by the tragic loss."Matt was an incredible person, everything you can ask for in a student, Best Buddy, teammate, friend, brother & son," the post 1833

An upper floor of a South Korean nightclub collapsed early Saturday, killing two people and wounding 17 others, local media reported.The casualties in the incident, which took place in the Coyote Ugly club in the city of Gwangju, included athletes competing in the FINA World Aquatics Championships, according to South Korean news agency Yonhap.The two people killed were both South Koreans while the injured included four Americans, two New Zealanders, one Dutch, one Italian and one Brazilian, authorities told Yonhap. It said their injuries were not severe.The injured Americans were US water polo players, a statement from USA Water Polo said. They were celebrating the Women's National Team winning the FINA World Championship on Friday. None had life-threatening injuries.The internal structure collapsed around 2:30 a.m local time, according to a tweet by the South Korean Ministry of Public Administration and Security."Currently, police and fire departments are investigating the precise cause of the accident," the agency said.Gwangju is located about 270 miles south of Seoul. The city is hosting the 2019 International Swimming Federation (FINA) World Championships, which include water polo, diving, high diving, artistic swimming and open water.What caused the collapse?Authorities are investigating whether the loft collapsed due to the weight, Yonhap reported. Witnesses told the news agency there were about 100 people in the loft area at the time of the collapse.Matt Small, New Zealand men's water polo team captain, reported that he was on the second floor of the club when it collapsed. "We were just dancing and then the next minute we dropped," he told New Zealand's Radio Sport."We... fell on top of the heads of other people that were beneath us... Some of them were pretty dire cases."Kim Young-don, head of the Gwangju Seobu fire station, said at a briefing that there were around 370 inside the club at the time of the collapse. "We deem that the second level... seems to have collapsed because there were too many people on it," he said. "The second level is a small space, it's not a space where a lot of people can be."The accident comes just a day before the championships draw to a close as the city is teeming with hundreds of athletes from across the globe."As some Championships' participants were present at the moment of the accident, FINA is carefully monitoring the situation and will activate all measures to ensure health care and assistance is provided whenever necessary," FINA said in a statement.On Friday, the US Women's National Water Polo Team beat Spain, sealing their third world championship win in a row.Christopher Ramsey, CEO of USA Water Polo, described the incident as a tragedy. "Players from our men's and women's teams were celebrating the women's world championship victory when the collapse occurred," he said. "Our hearts go out to the victims and their families."Of the American athletes, Kaleigh Gilchrist had surgery for a "deep" cut to her left leg, the polo organization said. Paige Hauschild needed stitches on cuts to her right arm, Johnny Hooper needed them on his left hand, and Ben Hallock had minor scrapes on his legs.The team said in an earlier statement all American athletes were safe and accounted for."Our thoughts are with those involved," the organization said on 3358

Apple has removed 181 vaping-related apps from its mobile App Store globally, the company said on Friday."Recently, experts ranging from the CDC to the American Heart Association have attributed a variety of lung injuries and fatalities to e-cigarette and vaping products, going so far as to call the spread of these devices a public health crisis and a youth epidemic. We agree, and we've updated our App Store Review Guidelines to reflect that apps encouraging or facilitating the use of these products are not permitted," the company said in a statement.Apple said the apps are a mix of stores, social networks, news and games. They represent 0.00010% of the 1.8 million apps available through the mobile App Store, the company said.The company said it had been moving in this direction for months. In June, Apple prohibited the promotion of vaping products in its app store and had not approved any new vaping-related apps since.The apps now banned from the App Store will continue to work for customers who already have them downloaded on their devices, and they can be transferred to new devices.Apple's move was applauded by groups such as the American Heart Association and the ghd Campaign for Tobacco-Free Kids."By taking e-cigarette related apps off the App Store, Apple will help reduce youth exposure to e-cigarette marketing and discourage youth use of these products. Apple is setting a welcome example of corporate responsibility in protecting our kids," Matthew L. Myers, president of the Campaign for Tobacco-Free Kids, said in a statement.Research published recently in the medical journal JAMA found that in 2019, 27.5% of high school students and 10.5% of middle school students currently use e-cigarettes. Based on that data from the National Youth Tobacco Survey, researchers estimated 4.1 million US high school students and 1.2 million middle school students currently use e-cigarettes, and 970,000 use them daily.Aside from the youth vaping epidemic, there were 2,172 cases of lung injury linked to vaping as of November 13, the US Centers for Disease Control and Prevention said on Thursday. The CDC also reports 42 confirmed deaths in 24 states and the District of Columbia.The CDC says it has yet to identify the official cause or causes of the outbreak, but the investigation has increasingly focused on products containing THC. Last week, the agency reported its first "potential chemical of concern": vitamin E acetate?, an additive sometimes used in THC and other vaping products. 2525

来源：资阳报