郑州近视手术费医保报销吗(郑州打激光多少钱) (今日更新中)

Astronomers looking at the atmosphere in neighboring Venus see something that might just be a sign of life.In a study published Monday, researchers from Cardiff University, MIT and elsewhere say they found the chemical signature of a noxious gas called phosphine.On Earth, phosphine is associated with life. It's found at the bottom of ponds, in badger guts and in penguin guano.Venus’ phosphine was observed in a narrow, temperate band within the planet’s atmospheres, where temperatures range from 30 to 200 degrees Fahrenheit. Scientists have speculated that if life exists on Venus, this layer of the atmosphere, or cloud deck, is likely the only place where it would survive, according to MIT.“This phosphine signal is perfectly positioned where others have conjectured the area could be habitable,” said the study’s co-author and EAPS Research Scientist Janusz Petkowski.Astronomers tried to figure out other, non-biological ways it could be produced and came up empty.“It’s very hard to prove a negative,” said Clara Sousa-Silva, research scientist in MIT’s Department of Earth, Atmospheric and Planetary Sciences (EAPS). “Now, astronomers will think of all the ways to justify phosphine without life, and I welcome that. Please do, because we are at the end of our possibilities to show abiotic processes that can make phosphine.”Outside experts — and the study authors themselves — say the research is tantalizing but not yet convincing. 1454

As many people started decorating early, it's likely 2020 is a "boom" year for Christmas tree sales. Some even bought a "real" tree for the first time.In July, Bob Schaefer had a feeling it was going to be a big year for Christmas tree sales. The general manager of Oregon-based Noble Mountain Tree Farm says his company looks at the big holidays leading up to the Christmas season to get an idea of what the market will be like.“The next thing we watch is pumpkins - again, off the charts, early,” Schaefer said.Noble Mountain is a large tree producer, and it has been in the Christmas business since 1969. It now sells about half a million trees a year. Schaefer says it developed helicopter harvesting and can have your tree cut and shipped in 24 hours.“This year, we shipped to Dubai, Hong Kong, Canada, Mexico and of course the US,” Schaefer said.Christmas trees are a 10-year crop and once a farm has harvested those trees that are mature and ready, that's it for the tree.“Our sales were off the charts and we did sell out,” Schaefer said. “We’re wholesalers, we don’t sell to individual customers, but our wholesale sales were done by the first of October. Our trees were committed for sale."Schaefer said people started decorating the weekend after Halloween, leading to thriving initial sales.“If it turns out that COVID has people staying home and they have in their hearts the need for a lot of Christmas cheer, then we can provide that with a real tree,” Doug Hundley, spokesman for the National Christmas Tree Association, said.He said if you don't have your tree yet, don't worry. They won't sell out."We’ve never had a shortage. What we have now is a nice balanced, tight market between supply and demand,” Hundley said.It's no easy feat to predict the market, in fact, it's next to impossible, he said.“When we have a boom year like we may be having right now, we kind of suspected it, but we didn’t anticipate it and we can’t produce a real tree overnight,” Hundley said. “So, we have to provide what we have and hope it’ll work out.”He said if lots are empty, it's because the major tree weekends have passed.Ninety percent of people have already gotten their tree this year. Hundley says what's left will suffice for those who still need one. He hopes they all sell. If they don't, they're rendered useless.“The beauty of real trees over fake is we have a highly biodegradable product, it’s grown naturally, part of nature, benefits the environment supports the American economy and when we’re done, we can grind them so easily and chip them into mulch,” Hundley said. “They literally become soil in a couple of years, put back in the ground.”If you are purchasing a natural Christmas tree, experts recommend not adding additives. All your tree needs is plain water at any temperature. 2813

At a contentious meeting on Monday, the Department of Justice's antitrust chief gave AT&T a choice: to get your purchase of Time Warner done, either sell off CNN's parent unit or DirecTV, or we'll see you in court.The government is holding up AT&T's pending acquisition of Time Warner, stirring speculation that the Trump administration is trying to retaliate against CNN for its coverage of the president.According to two sources with knowledge of the meeting, the DOJ is demanding that AT&T divest all of Turner, the unit of Time Warner that includes CNN as well as TNT and TBS."Threatening Turner is a fig leaf for threatening CNN," one of the sources said.AT&T is said to be reluctant to sell assets, especially Turner, which represents a significant portion of Time Warner's profits.Earlier on Wednesday AT&T said the timing of the deal's closing is now "uncertain.""We are in active discussions with the DOJ," John J. Stephens, chief financial officer for AT&T, said at a Wells Fargo conference.The stock of Time Warner, which owns CNN, fell more than 6.5% by Wednesday afternoon. AT&T was flat.The New York Times and the Financial Times also reported Wednesday afternoon that the DOJ was demanding the sale of CNN or Turner as a condition of approving the deal.The wireless giant previously said that it expected the acquisition to take effect by the end of this year. The deal was announced more than a year ago.The U.S. government is causing the delay. Stephens' comments effectively confirmed last week's Wall Street Journal report that the government is "actively considering" an antitrust lawsuit to block the impending acquisition.While the Justice Department declined to comment, sources had told the Journal that the department will sue if it can't reach an agreement on so-called "conditions" that are attached to the deal.The Journal story was an unwelcome surprise for AT&T executives. Transactions like Comcast's acquisition of NBCUniversal in 2011 are routinely approved with conditions attached."For over 40 years, vertical mergers like this one have always been approved because they benefit consumers without removing any competitors from the market," AT&T said last week. "While we won't comment on our discussions with DOJ, we see no reason in the law or the facts why this transaction should be an exception."The Justice Department's hardline approach to AT&T -- belying the business-friendly image of the Trump administration -- has spurred questions about Trump's personal interest in the deal.Time Warner's portfolio also includes Warner Bros., HBO, TNT and TBS.As a candidate, President Trump publicly vowed to block the deal. As president, he frequently criticizes CNN. Over the summer The New York Times reported that Trump aides discussed using the pending deal as a powerful form of leverage over CNN's coverage."You have to wonder" about the behind-the-scenes machinations "given that Trump has a vendetta against CNN and has openly talked about using these types of deals to punish them," Trevor Timm, the executive director of the Freedom of the Press Foundation, told CNN last week.On last Sunday's "Reliable Sources" on CNN, when asked whether Trump has had any involvement, counselor to the president Kellyanne Conway said "we're not going to interfere with that here."When asked whether the president still personally opposes the AT&T-Time Warner deal, Conway said, "I haven't discussed that with him lately."Trump was quoted criticizing the DOJ several times last week. He said he wants the department to investigate his political rivals, including Hillary Clinton.AT&T has declined to directly comment on concerns about political interference.But Stephens reiterated confidence in the deal at Wednesday's Wells Fargo conference, saying "these types of mergers bring great benefit to customers and have very routinely been approved by the DOJ and the federal government."AT&T and Time Warner agreed to the billion deal last fall.The-CNN-Wire 4047

As school districts across the country prepare to return to school, small businesses that rely on child visitors are closely watching."We're probably at about 15-20% of the business that we normally do. It has been a real gut-wrenching, heart-wrenching moment," said Susan Shaw, owner of The Art Barn in Georgia.When the pandemic hit in March, she thought her business would only be on a month hiatus. Shaw, who goes by Farmer Sue, quickly realized that wasn't the case."By the end of the month I realized we are not going to be back to normal. The schools, our entire spring was lost and 95% of our summer is lost and 100% of our fall is lost because no one is going to be coming out on field trips," said Shaw.The Art Barn provides art and agriculture entertainment for children throughout the year. Shaw hosts birthday parties, school field trips and even teaches at private schools in the afternoon. They, like Benton Family Farms in Kentucky, rely almost entirely on birthday parties, field trips and summer camps to keep their businesses running.Benton Family Farms says their camps ended up getting canceled."Nothing. Five weeks of camp, every weekend of birthday parties, all of our mobile trailers going out. Our mobile trailer was going out to day care centers, churches and libraries," said owner Mary Marcum.Marcum says every single scheduled event they had was canceled. Marcum has been running educational programs on the farm her parents owned for 72 years."For eight weeks now I thought, gosh what can we do? Because my husband does most of the books and he’s said, 'You're in trouble. You’ve got to do something.' And I had done goat yoga about three years ago, but I didn’t have the time," said Marcum.Marcum ended up turning to that one program she felt could hold up during the pandemic: goat yoga."Goat yoga! People were like, it's almost outdoors, it just has a cover over it. It was an open barn and they started coming!" said Marcum.The twice weekend sessions are helping Benton Family Farms pay for some of the feed for their animals. Marcum is now taking donations, holding auctions online and creating any limited outdoor programming she can to try and stay open. So far, only about 180 people are coming out to visit the farm a month. Compare that to their normal of 4,000 people a month. "You're talking about a parent and a child. At 4,000 that’s ,000. I can do all the little things I want but there’s a lot that’s just too much to make up," said Marcum."There were a lot of tears, more prayers and then more tears and then it was finally in mid-June I was able to grab my bootstraps and say, ‘No, you made this business from absolutely nothing, a crazy idea no one thought would work. Girl get your gumption and get going,'" said Shaw.The Art Barn is also trying to be creative with programming to bring people back to her farm during the pandemic. Shaw is creating educational videos of her programs that can be used as a virtual field trip for school districts across the country."There literally will be a field trip online and we’ve broken them into the five stations so the school can purchase, rent those videos and go online," said Shaw.Small businesses like The Art Barn and Benton Family Farms are desperately hoping that schools will allow field trips again soon. Right now, they aren't expecting any student visitors this fall but are hopeful that COVID-19 rates will at least be low enough for field trips to resume in the spring. 3489

ATLANTA (AP) — A federal judge has sentenced a California man to serve 35 years in prison for traveling to Atlanta to have sex with a 9-year-old girl.The U.S. attorney's office in Atlanta said Tuesday that 40-year-old Craig Alan Castaneda of Imperial Beach must also register as a sex offender and serve 10 years supervised release after his prison term.Castaneda was convicted in December.RELATED: Alabama governor signs bill permitting chemical castration for sex offendersAn undercover FBI agent posted an ad on Craigslist in April 2015 posing as a mother seeking a "teacher" for her 9-year-old daughter. Prosecutors say Castaneda responded, describing his prior experience molesting children.Castaneda continued to communicate with the undercover agent for several weeks and made plans to travel to Atlanta. FBI agents arrested Castaneda when he arrived at the Atlanta airport on May 2, 2015. 904

来源：资阳报