柳州大型工业吸尘器(自贡大功率工业吸尘器) (今日更新中)

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 Charlotte area is getting inundated with rain. You can see a car submerged along Freedom Drive. @FOX46News pic.twitter.com/TNwIL2MAT8— Derek Miloff (@Dmiloff) November 12, 2020 188

The coronavirus outbreak has put a hold on many things over the last few months, including some elective surgeries.When Nohely Uriostegui and her husband, Jose Pava, found out they were pregnant with a little boy, they were ecstatic. Then, the unfortunate news: their baby had spina bifida."After that, she said we’re going to do a test. You might be eligible for an in-utero surgery," said Uriostegui.That means surgery while the baby is still in the womb, and it had to be performed before 26 weeks of pregnancy. Everything was set up to go in Chicago until a phone call came from her doctor."He said, 'You know what? Based on COVID, everybody here on the team doesn’t feel like it’s an essential type of surgery,’" recalled Uriostegui.The same situation was unfolding for all types of patients around the country. Those hoping surgery could help their chronic pain were told they’d have to endure it for months longer. Organ transplant candidates were forced to wait as well. For Nohely and Jose, a delay meant they might miss their window to help their baby. But then, hope from three states away in Colorado."For this family, the clock was ticking. She had until she was 26 weeks to have fetal intervention, and that was literally five days, four days away. And they had to get from Chicago to here, be evaluated, have surgery set up to be performed, and so, we were able to do that for them," said Colorado Fetal Care Center surgeon Dr. Ken Liechty.The couple decided to travel to Colorado to have the procedure done."I got there on the 4th; my surgery was set for Monday, April 6, which was the exact same date that I was going to get it done in Chicago, and it was one day before I hit the 26-week mark," said Uriostegui."It’s open fetal surgery on the fetus as the actual patient," said Dr. Liechty. "We excise the cyst, we put the spinal cord back into the spinal canal."Doctors then put the muscle back over to seal it, close the skin over it, and then close the uterus. Without the in-utero surgery, Dr. Liechty says 90 percent of babies with spina bifida have a shunt put in to decompress the brain. However, that likely wouldn’t have been the only surgery he would have needed."These shunts fail, they can get infected, they can have all kinds of problems, they average seven surgeries at least for these shunts in their first few years of their life," said Dr. Liechty.In the time of this pandemic, that could mean more waiting as hospital beds begin to fill back up with coronavirus patients."COVID-19 caused a lot of places around the country to reexamine what cases could be done in their facilities, and a number of fetal centers are actually located in adult centers," said Dr. Liechty.Those places are filling up faster than children's hospitals, causing families like Uriostegui and her husband to almost miss opportunities to help their children before they even enter the world."The neurosurgeon over there actually said to us last time, that if you were to look at him, you would have never guessed that he’s born with spina bifida or that we went through this whole journey," said Uriostegui. 3126

The economy is humming. Americans are eager to spend on clothes, toys and home decor.Just not at JCPenney.Leaderless, billion in debt and with a stock price below , the besieged retailer faces an uncertain fate after posting its latest round of dismal earnings."They're in a leaky boat that eventually will sink," said Mark Cohen, the director of retail studies at the Columbia Business School and a former CEO of Sears Canada and other department stores. "The prognosis for the future is not happiness."Penney finds itself weighed down by years of errors, failed CEOs and muddled attempts to establish a clear identity with shoppers. 652

The football schedule starts as early as the weekend of Sept. 5 with final games slated for Nov. 21 to align with academic calendars. The Big Ten Football Championship Game remains scheduled for Dec. 5 at Lucas Oil Stadium, though it could be moved as late as Dec. 19. pic.twitter.com/vWp3OSifBc— Big Ten Conference (@bigten) August 5, 2020 348

来源：资阳报