莲湖高二正规升学率(灞桥区中考冲刺哪家好) (今日更新中)

Scientists are proposing an ingenious but as-yet-unproven way to tackle climate change: spraying sun-dimming chemicals into the Earth's atmosphere.The research by scientists at Harvard and Yale universities, published in the journal Environmental Research Letters, proposes using a technique known as stratospheric aerosol injection, which they say could cut the rate of global warming in half.The technique would involve spraying large amounts of sulfate particles into the Earth's lower stratosphere at altitudes as high as 12 miles. The scientists propose delivering the sulfates with specially designed high-altitude aircraft, balloons or large naval-style guns.Despite the technology being undeveloped and with no existing aircraft suitable for adaptation, the researchers say that "developing a new, purpose-built tanker with substantial payload capabilities would neither be technologically difficult nor prohibitively expensive."They estimate the total cost of launching a hypothetical system in 15 years' time at around .5 billion, with running costs of .25 billion a year over a 15-year period.The report does, however, acknowledge that the technique is purely hypothetical."We make no judgment about the desirability of SAI," the report states. "We simply show that a hypothetical deployment program commencing 15 years hence, while both highly uncertain and ambitious, would indeed be technically possible from an engineering perspective. It would also be remarkably inexpensive."The researchers also acknowledge potential risks: coordination between multiple countries in both hemispheres would be required, and stratospheric aerosol injection techniques could jeopardize crop yields, lead to droughts or cause extreme weather.The proposals also don't address the issue of rising greenhouse gas emissions, which are a leading cause of global warming.And despite the conviction of the report's authors, other experts were skeptical."From the point of view of climate economics, solar radiation management is still a much worse solution than greenhouse gas emissions: more costly and much more risky over the long run," said Philippe Thalmann of the école Polytechnique Fédérale de Lausanne, an expert in the economics of climate change.David Archer of the Department of Geophysical Science at the University of Chicago said, "The problem with engineering climate in this way is that it's only a temporary Band-Aid covering a problem that will persist essentially forever, actually hundreds of thousands of years for fossil fuel CO2 to finally go away naturally."It will be tempting to continue to procrastinate on cleaning up our energy system, but we'd be leaving the planet on a form of life-support. If a future generation failed to pay their climate bill they would get all of our warming all at once." 2830

SEATTLE, Wash, -- Gwen Anderson says life for her and her daughter, Katja, was pretty tough even before COVID-19 hit.“I became disabled, I had a lot of medical issues. Once I became disabled, my doctor took me off of work, I lost my income,” said Anderson.She and Katja lived about 20 minutes south of Seattle and Katja was finishing up 8th grade.Then came the pandemic, an abrupt shutdown at school, and if that weren’t enough, financially, things went from bad to worse.“That was the hardest decision to make was to give up my apartment and to realize I couldn’t afford it any longer and to become homeless,” Anderson said.For Katja, it meant learning from home without a home. There was no consistency, and she says that was the hardest part.“Not being in contact with my teachers and having them help me, so I can ask questions,” said Katja.They moved into Mary’s Place, a homeless shelter that had to make adjustments during the pandemic as well.“COVID has created, basically, our entire service system and the work that we do and adjust every piece of it,”said James Flynn, the chief programming officer for Mary’s Place.He runs all the programs used by people that stay at the shelter. That includes assistance that helps students stay in school“Our youths services team are usually helping prepare folks for enrollment, getting ready for the school year, making sure everybody has what they need to feel prepared for the school year. Right now we’re really taking things day by day... making sure people have laptops, tablets, internet service. At the end of last school year here in our kids club areas we provided space for families who needed extra support to be able to have their kids come here and get some extra help,” said Flynn.There’s 2.5 million homeless kids in the U.S. today, many of whom, if they’re not able to stay in school, may not have access to the technology they need to stay connected.So far, Katja has been able to keep her school-issued laptop.“We still have our school laptops, we didn’t return them,” she said.Gwen worries about how being away from school and being homeless will affect her daughter beyond just academically.“She’s originally a shy person and that (school) helps her come out of her shell. So I would prefer for her to be in school and her to interact with her classmates and her teachers,” said Anderson.She says she will do what she has to get herself and Katja into a new home and keep Katja connected to her education. 2483

SAN MARCOS (CNS) - A motorist was killed in a multi-vehicle crash this morning involving a semi truck on state Route 78 in San Marcos and another motorist suffered major injuries in a rollover crash around four-and-a-half hours later on the opposite side of the highway, authorities said.A semi truck was reportedly disabled around 12:15 a.m. in the left lane of eastbound state Route 78 west of Twin Oaks Valley Road, according to a California Highway Patrol incident log.At 12:55 a.m., someone told dispatchers that a vehicle crashed into the back of the semi truck and the vehicle was totaled.The driver of the Honda CRV that struck the semi truck was killed in the crash, CHP Officer Tommy Doerr said.CHECK 10NEWS TRAFFIC MAPAt 5:35 a.m., a crash between a Ford pickup and two other vehicles on westbound SR-78 west of Twin Oaks Valley Road caused the pickup to overturn and land on its roof, Doerr said. The Ford driver was taken to Palomar Medical Center with major injuries.No details about the victims were immediately available.All lanes of eastbound SR-78 west of Twin Oaks Valley Road were closed following the first crash, but were re-opened by 6 a.m., Doerr said.The left lane of westbound SR-78 west of Twin Oaks Valley Road was closed following the second crash, but it was re-opened around 6:25 a.m., he said.CHP officers were investigating the circumstances leading up to both crashes. 1410

SANTEE, Calif. (KGTV) - Surveillace video shows thieves stuffing a car after breaking into a popular Santee restaurant hit hard by the pandemic and a recent tragedy.Every time restaurant owner Maria Dellarsina looks at the surveillance video she gets anxious."All kinds of emotions. I feel angry, and I feel sad," said Dellarsina.The roller coaster of emotions began after a Thanksgiving morning break-in. The 43-year old Jimmy's Restaurant of Santee was ransacked by thieves. The HVAC access on the roof is the likely entry point.Video shows three people stuffing items into their car, as they helped themselves to whatever they wanted."They took food, liquor, checks, cash, laptop computer, and sports memorabilia," said Dellarsina.The items stolen were just part of the loss. The thieves also cut the power and left the refrigerators open, so all the food had to be tossed."When I saw food going into the trash is when I broke down," said Dellarsina.The total loss more than ,000.The restaurant had to be shut down for a few days, including the day after Thanksgiving, their busiest day of the year."One thing after another ... devastation," said Dellarsina.Beginning in March, restaurant was shut down for months during the pandemic. In May, her husband and co-owner John, passed away from lung cancer."I didn't know if I wanted to open again. We did it. I got my strength back to continue his legacy, but it's hard on us.So far, the pandemic has slashed revenues by more than 60%. The burglary has served up more pain, but Dellarsina vows to continue."It's been very rough, but this is not going to stop us," said Dellarsina.The restaurant is insured, but it's not clear how much will be covered.Anyone with information is asked to call Crimestoppers at 888-580-8477. 1783

Sears is swinging the ax again. The struggling retailer announced plans to close another 46 Sears and Kmart stores.The company has already closed more than 100 stores this year -- including the last remaining Sears in its hometown of Chicago -- as it attempts to stem losses.Employees at 13 Kmart stores and 33 Sears stores were notified that their locations would close by November.When Sears and Kmart merged in 2005, they had about 3,500 US stores between them. About 900 US stores remain, and more closings are likely."We continue to evaluate our network of stores, which is a critical component to our integrated retail transformation, and will make further adjustments as needed," the company said in a statement.Liquidation sales at some of the stores will start as soon as August 30.Sears has lost .2 billion since 2010, its last profitable year and sales have plunged 60% in that time.The company has been looking at selling assets as a way to raise money. In August, CEO and majority shareholder Eddie Lampert offered to buy the company's Kenmore appliance brand for 0 million, and its Sears Home Services division for between million and million.Lampert said he also plans to negotiate with lenders to try to extend the repayment schedule for some of Sears' debt.Shares of Sears plunged 35% in the week since Lampert's bid was disclosed, and hit an all-time low of .15 a share Wednesday. The stock closed trading at .18, still down 5% for the day.Stores set to close:Kmarts:Spring Valley, California,Clovis, California,Antioch, CaliforniaLos Angeles, California (at 6310 W. 3rd Street)Milford, ConnecticutNewark, DelawareSteger, IllinoisCape Girardeau, MissouriColumbus, MississippiRiverhead, New YorkGresham, OregonScott Depot, West VirginiaGillette, WyomingSears:Flagstaff, ArizonaSanta Cruz, CaliforniaGrand Junction, ColoradoTampa, Florida (at University Square Mall)Doral, FloridaNaples, FloridaSavannah, GeorgiaAtlanta, GeorgiaBrunswick, GeorgiaBloomington, IllinoisFort Wayne, IndianaFlorence, KentuckyHammond, LouisianaHolyoke, MassachusettsTaunton, MassachusettsJackson, MichiganCrabtree, North CarolinaSalem, New HampshireManchester, New HampshireMays Landing, New JerseyVictor, New YorkGlen Falls, New YorkNew Hyde Park, New YorkDayton, OhioCincinnati, Ohio (at Northgate Mall)Happy Valley, OregonHouston, Texas (at Memorial City Mall)Bryan, TexasWest Jordan, UtahFairfax, VirginiaVancouver, WashingtonEau Claire, WisconsinLa Crosse, WisconsinThe-CNN-Wire 2503

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