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郑州670度近视能治好吗
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发布时间: 2025-05-26 07:03:00北京青年报社官方账号
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  郑州670度近视能治好吗   

The colors of an autumn afternoon can be serene, brilliant and breathtaking.“As the days start getting shorter and the nights get longer, that's the cue that the trees get to change the foliage,” said climate scientist Astrid Caldas.That foliage requires a delicate dance of temperature and moisture to produce fall colors. It’s a dance potentially now in jeopardy due to climate change.“Because these things -- temperature and precipitation, rainfall -- are being affected, changed by climate, then the fall foliage can really get affected,” said Caldas, who is a senior climate scientist at the Union of Concerned Scientists, a nonprofit science organization.She said long-term shifting temperature trends and more rain will be disruptive to fall foliage in certain parts of the country.“We are seeing extreme precipitation increase, particularly in the Northeast and the Midwest,” Caldas said.That precipitation was evident in Minnesota, where people found themselves caught off-guard this year by an unusually early snowfall."I had to completely disassemble my fall leaf clean-up box and make sure my plow is still working,” said Greg Futchi, who is a landscape contractor. “We usually get all the leaves down before we see some snow, but not this year."All of that added moisture can lead to a shorter fall foliage season, Caldas said. Yet, repeated and ongoing droughts, like those seen in the western U.S., also bring their own set of problems to autumn leaves.“When it’s very dry, the colors get a little more muted also,” Caldas said. “So, drought can really kind of change completely the setup.”Scientists add that climate change isn’t just going to affect the ways leaves change their colors during the fall. It’s also going to potentially affect where those trees grow in the first place.“When the conditions start changing --like it's starting to get warmer further and further north--well, that's also a possibility that species are going to start migrating farther north,” Caldas said. “So, as different trees start moving to different areas, then the colors may change because the color depends on the tree.”That may mean having to travel farther north to see stunning red maples. It is a change that will be hard to stop unless action is taken on a global scale.“In the long run, if the countries and the whole world is not committed to really reducing emissions and changing to renewables and making that complete change, then it's going to be very hard for us not to see very drastic changes, because small changes are already happening,” Caldas said.Those changes are now encroaching on a time-honored spectacle, courtesy of Mother Nature. 2667

  郑州670度近视能治好吗   

The E. coli outbreak linked to romaine lettuce has sickened 43 people in 12 states, the US Food and Drug Administration said Monday.The FDA said that the ongoing outbreak is linked to the "end of season" harvest in some parts of California -- but the agency still says people should not eat any romaine lettuce.People have become sick in California, Connecticut, Illinois, Massachusetts, Maryland, Michigan, New Hampshire, New Jersey, New York, Ohio and Wisconsin.An additional 22 people in Canada are also ill, so the FDA is coordinating its investigation with the Canadian health and food safety authorities, the agency said.When the outbreak was announced last week, the FDA and the Centers for Disease Control and Prevention warned consumers to stay away from all romaine lettuce, but the FDA said the investigation was focused on California and Mexico."Over the Thanksgiving holiday, the FDA continued to investigate the outbreak," according to a statement from FDA Commissioner Dr. Scott Gottlieb. "Our investigation at this point suggests that romaine lettuce associated with the outbreak comes from areas of California that grow romaine lettuce over the summer months, and that the outbreak appears to be related to 'end of season' romaine lettuce harvested from these areas. The involved areas include the Central Coast growing regions of central and northern California."Lettuce growing and harvesting in the winter months is taking place in California and Arizona's desert regions and Florida, as well as Mexico. Currently, the FDA investigation does not implicate lettuce from any of these areas.While the romaine supply undergoes a "clean break" to ensure all the contaminated lettuce is effectively gone from the market, the FDA has asked producers and distributors to provide clear labeling with the lettuce's date and origin in the future.A task force within the lettuce industry has also been established to determine better solutions for labeling long-term in order to help with tracing."Based on discussions with major producers and distributors, romaine lettuce entering the market will now be labeled with a harvest location and a harvest date," Gottlieb said. "Romaine lettuce entering the market can also be labeled as being hydroponically or greenhouse grown. If it does not have this information, you should not eat or use it."If consumers, retailers and food service facilities are unable to identify that romaine lettuce products are not affected -- which means determining that the products were grown outside the California regions that appear to be implicated in the current outbreak investigation -- we urge that these products not be purchased, or if purchased, be discarded or returned to the place of purchase."Symptoms of E. coli infection, which usually begin about three or four days after consuming the bacteria, can include watery or bloody diarrhea, fever, abdominal cramps, nausea and vomiting, according to the CDC. Most people infected by the bacteria get better within five to seven days, though this particular strain of E. coli tends to cause more severe illness.People of all ages are at risk of becoming infected with Shiga toxin-producing E. coli, according to the FDA. Children under 5, adults older than 65 and people with weakened immune systems, such as people with chronic diseases, are more likely to develop severe illness, but even healthy children and adults can become seriously ill. 3450

  郑州670度近视能治好吗   

The death of a 22-year-old African-American man shortly after a struggle with police last week has been ruled a homicide, authorities in Jefferson Parish, Louisiana said Monday.Keeven Robinson, of Metairie, died last Thursday, following a police chase and an altercation with narcotics detectives from the Jefferson Parish Sheriff's Office, located outside of New Orleans, according to authorities.An initial autopsy found significant traumatic injuries to the soft tissue of Robinson's neck, said Jefferson Parish Coroner Dr. Gerry Cvitanovich, who cautioned that the results from the autopsy, which was conducted Saturday, are preliminary and more tests need to be conducted.Cvitanovich said the findings are consistent with compressional asphyxia, which will likely be cause of death at the end of the process.The four detectives involved in the incident are white, said Sheriff Joseph P. Lopinto, who declined to release their names at this point."I understand ... this investigation will be under a microscope, understand it fully," Lopinto told reporters.Gaylor Spiller, president of the West Jefferson Parish NAACP branch, said Robinson's family is also seeking a second independent autopsy."I like the fact that Sheriff Lopinto stepped up to plate, and he's doing his part," Spiller said, according CNN affiliate WDSU. "He knows that the NAACP will be on his trail."Robinson was being investigated by narcotics detectives early Thursday, Lt. Jason Rivarde, spokesman for Jefferson Parish Sheriff's Office, told CNN.Undercover detectives assigned to the case tracked Robinson down at a local gas station and tried to arrest him, according to Rivarde. But Robinson jumped back in his vehicle and led police on a chase after spotting them, Rivarde said.The suspect rammed several police cars before crashing his vehicle, according to Rivarde.Robinson took off on foot, jumping several fences before deputies caught him in a backyard of a nearby residential neighborhood, Rivarde said.Rivarde says a struggle ensued with deputies who eventually handcuffed Robinson. Once handcuffed, detectives noticed Robinson was not breathing, Rivarde said. Detectives administered life saving techniques before Robinson was taken to a local hospital where he died, Rivarde said.The agency is not equipped with body cameras or dash cameras, according to Rivarde."They were in a struggle," Lopinto said. "They used force." He added that the officers admitted to using force during the arrest.But the sheriff said he's "not coming to the conclusion that this was a chokehold."Lopinto said he contacted the Louisiana State Police on Saturday after he was told of the initial findings, and asked them to assist in the investigation.The sheriff said he has "every faith" in his officers to do their job well."I know they have the expertise because this is what they do every day, but I also understand that an independent set of eyes is something that's appropriate in a case like this," he said.The four detectives involved in the arrest were read their rights and have given statements, Lopinto said.They are being reassigned to administrative duty pending the outcome of the investigation, the sheriff's said.The FBI's Civil Rights Task force is also looking into the matter after he contacted them Saturday, the sheriff said.The actions of the coroner's office were largely praised Monday by Robinson's family.Hester Hilliard, an attorney for Robinson's family, thanked the coroner's office "for their professionalism and their transparency.""Today is just as hard as Thursday for this family. They're grieving, and today they had to find out that Keeven lost his life at the hands of another," she said, according DSU. "And that's very, very hard for them.""Now, it's time for us to move on to making funeral arrangements for a 22-year-old that should not have died," she said.In an interview with CNN, Hilliard said she is hoping "to see the same justice for Keeven as with any other individual who has died at the hands of someone other than the police.""We are hoping for a thorough investigation, an arrest and prosecution of those that caused his death unjustifiably," she said. 4201

  

The digital news company Mic has laid off most of its staff, a spokesperson for the company confirmed.The layoffs were first reported Thursday by Recode. It is not yet clear exactly how many employees were affected. Mic declined to comment beyond confirming the Recode report.The company was founded in 2011, and for the past several years has branded itself as a news website geared toward millennials.Mic Publisher Cory Haik also resigned Thursday. In a note to staff that was obtained by CNN Business, Haik called journalism a "tough business.""Our business models are unsettled, and the macro forces at play are all going through their own states of unrest," she wrote. "If anyone tells you they have it figured out, a special plan to save us all, or that it's all due to a singular fault, know that is categorically false. Like the truth, it is indeed complicated."Mic was once a digital media darling, attracting around million in funding from investors. Its biggest backers included Lightspeed Venture Partners, Clark Jermoluk Founders Fund, WPP and WarnerMedia. (WarnerMedia owns CNN.)The company's staff swelled to more than 100 people by early 2016, according to The New York Times, which asked in an article published at the time: "What happens when millennials run the workplace?"But the climate is a tough one for digital media publishers right now. Ad revenue alone hasn't been enough to support these businesses, and Google and Facebook have substantial control over the ad market.Refinery29, HuffPost and Vocativ have all cut staff in the past year. So have CNN Digital, Vice and BuzzFeed.Mic laid off 25 employees in August 2017 as part of a pivot to video. Co-founder and CEO Chris Altchek told staff at the time that the shift was needed because "visual journalism already makes up 75% of the time that our audience spends" with the site.There were signs this year that the environment wasn't improving for Mic. Digiday reported in April that traffic to Mic's website had been plunging.The article also noted that Mic was very reliant on Facebook, citing statistics that showed views on the social media site fell to 11 million views in March compared to 192 million about a year earlier.Still, company executives pushed back on some reports that characterized the situation at Mic as particularly dire. When the Columbia Journalism Review reported in September that the company's board discussed a possible shutdown, Altchek called the report "categorically false."Emily Singer, a senior political reporter at Mic, tweeted Thursday that she was leaving the company."I'm so proud of what we've accomplished here," Singer wrote.Kerry Lauerman, Mic's executive news director, tweeted about the "gutting experience" Thursday."But only love for the extremely resilient and open-hearted team of Mic editors, producers, writers and shooters I had the great honor of working with," he added. "They performed brilliantly often under a cloud of uncertainty."Reached by phone, Lauerman declined to comment further, saying only that the team was packing up all of their things.Several other employees also tweeted news of their departures."I have so much to say, but most importantly the time I spent at @mic was the best of my career," wrote Managing Editor Colleen Curry. "I learned so, so much from brilliant people dedicated to keeping journalism alive."Mic is also in talks to sell at least part of the company to Bustle Digital Group, Recode reported Wednesday. A source with knowledge of the potential deal confirmed that report to CNN Business. 3572

  

The company that owns GEDmatch, the DNA analysis site that police in California used to catch the so-called Golden State Killer, said hackers attacked their database and exposed users' DNA profile data to law enforcement searches.In a statement posted on Facebook, Verogen said they took down their website after being hit by two security breaches on July 19 and July 20.The company stated that GEDmatch profiles were exposed to law enforcement agencies in an “orchestrated through a sophisticated attack on one of our servers via an existing user account.""As a result of this breach, all user permissions were reset, making all profiles visible to all users," the company said in the statement. "This was the case for approximately 3 hours. During this time, users who did not opt-in for law enforcement matching were available for law enforcement matching, and, conversely, all law enforcement profiles were made visible to GEDmatch users."GEDmatch rose to face in 2018 when their site was used by law enforcement to match the DNA to nab Joseph James DeAngelo, who's also known as the Golden State Killer.DeAngelo pled guilty to 13 murders back in June, CBS News reported.The company says the site should be back up and running by Saturday. 1251

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