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发布时间: 2025-05-24 10:22:30北京青年报社官方账号
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  长沙爱尔眼科陈瑶   

The first day of October might seem like an odd time to talk about summer camp, but one business has found a way to keep its operation running overtime during the COVID-19 pandemic.Camp Sea Gull is located on a remote part of the North Carolina shore. Typically, it accommodates thousands of campers a year. But once COVID-19 hit, that changed and put the camp in a precarious position along with so many other businesses.“It was really difficult,” said camp director Allison Simmons.Simmons said the camp was able to open this summer but only with a fraction of its normal participants. So, to try to attract more people, she had the idea of opening the bunks to families who wanted a change of scenery as they work or learn from home.“To me, this is giving a lot of our parents and students some hope in breaking up the monotony of whenever their school started,” said Simmons.The reservations allow families to stay at Camp Sea Gull for up to seven days, and Simmons, along with other administrators, came up with five different activity programs for families.The camp installed high-speed WiFi throughout its buildings so parents and their kids could access it during working hours, while it worked to offer activities afterward.A normal day might include opportunities to fish, sail, canoe, and play games from 3 p.m. to sundown.“[Before coming to camp] my kids were all sitting in their rooms by themselves for 6 or 8 hours a day in front of a screen, and that’s just not normal for kids,” said Stan Coerr.Coerr says he has been coming to Camp Sea Gull for 40 years--first as a camper, then as a counselor, and now as a dad who wants to plan a getaway with his three sons ages 20, 16, and 14.“I told my boys [the pandemic] won’t be the worst thing you go through but it will probably be the weirdest,” said Coerr. “And as much as I can get them out and doing things as a family, which is kind of rare these days, I will definitely take that opportunity.”Coerr says the four of them stay in the same bunk and have each claimed a portion of it for their work. Since being at camp for a few days now he says he has noticed his sons are more attentive to their schoolwork and bicker less.It has also allowed Simmons’ business to flourish. She says camp can now stay open past August, when it would end during a normal season.She says 75 percent of the people who have signed up are new clients as well. 2412

  长沙爱尔眼科陈瑶   

The Centers for Disease Control has issued new guidance for employers, giving them various situations they may come across and how they should decide to test their employees for COVID-19."There's a lot of different questions coming out from employers about the whole process of testing, doing temperature taking of employees who are returning back to work again," says Amber Clayton, the knowledge center director at the Society for Human Resources Management.Clayton says employers are grappling with increased uncertainty surrounding how and when to implement coronavirus testing at their offices."Employers can have a policy in place. Per the Equal Employment Opportunity Commission they can test during this pandemic so they could require COVID testing. Now, antibody testing can’t be mandated but COVID testing can," says Clayton.The CDC recommends, in most cases, to only test employees who are showing symptoms.But what if a person knows they've been exposed to the virus but isn't showing symptoms, is a test appropriate?"I think it may be on a case by case basis. So, if it is positive, I think it's probably helpful. It tells you the person did in fact become infected," says Dr. Beth Thielen, an infectious disease doctor with the University of Minnesota.Dr. Thielen says employers should be careful, though, as employees who aren't showing symptoms could have a false negative if they test too early, before the virus spreads in the person's system."The CDC guidance still indicates if someone tests positive for COVID before they return back to work, they should be quarantined and out of work for at least 10 days, that they don't have a fever or they've they have gone without a fever for 24 hours or without fever reducing medications," says Clayton.Employers can ask employees who have gotten a positive COVID-19 test to take a second test, showing they're negative before returning to work, but the CDC doesn't recommend it and says in their guidelines, "Employees with COVID-19 who have stayed home can stop home isolation and return to work when they have met one of the sets of criteria.”Some of that criteria includes 10 days passing since the employee last experienced any COVID-19 symptoms.Dr. Thielen says, this recommendation makes sense."We haven’t detected people who have had culturable virus out as far as 14 days after," says Dr. Thielen. She adds, so far, studies have found that most people who still test positive weeks alter won't transmit the virus to others. She believes employers should continue to look to the CDC for guidance."I think these are some of our leading public health thinkers and they’re making decisions based on a long history of experience based on dealing with other respiratory infections but also newly emerging data," says Dr. Thielen.As for Clayton, she says employers will want to ensure the confidentiality of employees who do test positive while at the same time notifying others who may have been exposed. And also, do some research or consult legal counsel before implementing any testing at the office."Or if you have situations where employees refuse to be tested maybe for medical reasons, those things tend to fall under the Americans with Disabilities Act sometimes, so make sure you’re doing your homework before you implement any type of testing program," says Clayton. 3350

  长沙爱尔眼科陈瑶   

The FDA is offering formal guidance on the amount of inorganic arsenic allowed in infant rice cereal.Exposure to inorganic arsenic has been associated with neurodevelopmental effects, according to the Food and Drug Administration, including lung and bladder cancer risk. Arsenic occurs naturally in the soil, and rice has been shown to absorb a small amount during the growing process.The new guidance identifies a level of at or below 100 micrograms per kilogram and is based on draft guidance from 2016. The guidance is recommended, but not legally enforceable.“It is important to note that the agency’s data show that most products on the market are already below this level and that parents and caregivers should know that a well-balanced diet also includes a variety of grains like oats and barley,” said a statement from Susan Mayne, Ph.D., director of the FDA’s Center for Food Safety and Applied Nutrition.According to the FDA, results from testing in 2018 showed 76 percent of samples were at or below the 100 ppb level, compared to 47 percent of samples tested in 2014 and 36 percent of samples tested between 2011-2013.The FDA attributes the drop in inorganic arsenic presence to changes manufacturers are making in sourcing rice and testing their ingredients. 1279

  

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

  

The Geminid meteor shower peaks this week, so hope for clear skies that will let you see a beautiful show of green fireballs on Thursday and Friday. This will be the last -- and strongest -- meteor shower of the year, according to NASA.This phenomenon was first recorded in 1862 and causes a show each December.In the hours before sunrise Friday, the most meteors will be visible in the North American sky, peaking about 7:30 a.m. ET, predicts Sky & Telescope. To see when they will peak in your part of the world, check here.But the morning isn't your only chance. On Thursday and Friday, keep an eye on the sky a few hours after sunset -- just keep the moon at your back.Although the Geminid shower is known for its "shooting stars," the number of meteors visible depends on the time and how dark it is. There will be fewer of them earlier in the evening, but the shower should hit a maximum of about 100 per hour around 2 a.m., NASA said. For those in the suburbs, expect about 30 to 40 per hour. And if you're in a city like New York, San Francisco or Atlanta, you probably won't see anything.Early evening meteors may be longer, with dramatic streaks that last several seconds. Later on, the meteors will present quicker streaks or leave trails of smoke that appear to glow.The asteroid 3200 Phaethon is responsible for this meteor shower, which is unusual because comets usually create meteor showers with icy debris. Scientists have debated the very nature of what Phaethon is. The closely tracked near-Earth asteroid has been likened to comets, so it's been called a "rock comet."Phaethon was discovered in October 1983 and named after the Greek myth about the son of Helios, the sun god, because it closely approaches our sun.Phaethon orbits the sun closer than any other asteroid and takes 1.4 years to orbit it. The asteroid heats to about 1,300 degrees Fahrenheit on closest approach to the sun, which causes it to shed dusty debris.These particles cause the meteor shower when they plunge into Earth's atmosphere at 22 miles per second, vaporizing in the streaks we call "shooting stars."If you live in an urban area, you may want to drive to a place that isn't littered with city lights that will obstruct your view. If you're able to find an area unaffected by light pollution, meteors could be visible every couple of minutes from 10 p.m. until dawn.Find an open area with a wide view of the sky, and don't forget to bundle up. Make sure you have a chair or blanket so you can look straight up. And give your eyes about 20 to 30 minutes to adjust to the darkness -- without looking at your phone -- so meteors are easier to spot.While you're keeping an eye out for the meteor shower, you might see a small, foggy green patch in the sky, NASA said. That will be Comet 46P/Wirtanen, which is making its closest approach to Earth -- within 7 million miles -- for the next 20 years. And it will be visible to the naked eye. The comet is expected to come closest to Earth and peak Sunday. 3007

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