哈密割包皮一般要花多少钱哈密不要孩子费是多少,哈密哪儿妇科比较好,哈密得了性功能障碍改怎么办,哈密包皮手术要多少钱了,哈密几岁做包皮术,哈密包皮割完的好处,哈密治阳痿的多少钱

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

The Centers for Disease Control and Prevention is now publicly acknowledging people can be infected with the coronavirus through airborne transmission, especially in enclosed spaces with inadequate ventilation.The update embraces growing evidence and international research showing the coronavirus can linger in the air longer - for minutes and hours - and travel farther than six feet.The update comes two weeks after the official CDC website was updated to reflect this, only to be removed a few days later with the agency saying it was “posted in error” before it was fully reviewed.The draft language seemed to imply aerosol or airborne transmission was the main way the coronavirus spreads, and the CDC says that is not the case.“Infections occur mainly through exposure to respiratory droplets when a person is in close contact with someone who has COVID-19,” the CDC states.Their added section is titled “COVID-19 can sometimes be spread by airborne transmission,” and includes information about smaller particles lingering in the air after an infected person had left the space. "Some infections can be spread by exposure to virus in small droplets and particles that can linger in the air for minutes to hours," it reads.“There is evidence that under certain conditions, people with COVID-19 seem to have infected others who were more than 6 feet away. These transmissions occurred within enclosed spaces that had inadequate ventilation. Sometimes the infected person was breathing heavily, for example while singing or exercising,” the new section on the CDC’s website reads. “These transmissions occurred within enclosed spaces that had inadequate ventilation.”The World Health Organization changed their guidance in July and noted the prevalence of airborne transmission of coronavirus and particles lingering in the air. Hundreds of scientists encouraged the WHO to make the acknowledgement following research and studies. 1943

The first experimental COVID-19 vaccine in the U.S. is on track to begin a huge study next month to prove if it really can fend off the coronavirus, while hard-hit Brazil is testing a different shot from China.Where to do crucial, late-stage testing and how many volunteers are needed to roll up their sleeves are big worries for health officials as the virus spread starts tapering off in parts of the world.Moderna Inc. said Thursday the vaccine it is developing with the National Institutes of Health will be tested in 30,000 people in the U.S. Some will get the real shot and some a dummy shot, as scientists carefully compare which group winds up with the most infections.With far fewer COVID-19 cases in China, Sinovac Biotech turned to Brazil, the epicenter of Latin America’s outbreak, for at least part of its final testing. The government of S?o Paulo announced Thursday that Sinovac will ship enough of its experimental vaccine to test in 9,000 Brazilians starting next month.If it works, “with this vaccine we will be able to immunize millions of Brazilians,” said S?o Paulo′s Gov. Joao Doria.Worldwide, about a dozen COVID-19 potential vaccines are in early stages of testing. The NIH expects to help several additional shots move into those final, large-scale studies this summer, including one made by Oxford University that’s also being tested in a few thousand volunteers in Brazil.There’s no guarantee any of the experimental shots will pan out.But if all goes well, “there will be potential to get answers” on which vaccines work by the end of the year, Dr. John Mascola, who directs NIH’s vaccine research center, told a meeting of the National Academy of Medicine on Wednesday.Vaccines train the body to recognize a virus and fight back, and specialists say it’s vital to test shots made in different ways — to increase the odds that at least one kind will work.Sinovac’s vaccine is made by growing the coronavirus in a lab and then killing it. So-called “whole inactivated” vaccines are tried-and-true, used for decades to make shots against polio, flu and other diseases — giving the body a sneak peek at the germ itself — but growing the virus is difficult and requires lab precautions.The vaccine made by the NIH and Moderna contains no actual virus. Those shots contain the genetic code for the aptly named “spike” protein that coats the surface of the coronavirus. The body’s cells use that code to make some harmless spike protein that the immune system reacts to, ready if it later encounters the real thing. The so-called mRNA vaccine is easier to make, but it’s a new and unproven technology.Neither company has yet published results of how their shots fared in smaller, earlier-stage studies, designed to check for serious side effects and how well people’s immune systems respond to different doses.Even before proof that any potential vaccine will work, companies and governments are beginning to stockpile millions of doses so they can be ready to start vaccinating as soon as answers arrive.In the U.S., a program called “Operation Warp Speed” aims to have 300 million doses on hand by January. Under Brazil’s agreement with Sinovac, the Instituto Butantan will learn to produce the Chinese shot.___AP journalist Marcelo Silva de Sousa contributed to this report.___The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education. The AP is solely responsible for all content. 3499

The Environmental Protection Agency has handed documents to Congress that show new travel expenses from agency administrator Scott Pruitt, totaling some ,000 in hotel stays and air travel, The Washington Post reported Tuesday.The documents, which were requested by House Oversight Committee Chairman Trey Gowdy and obtained by the Post, reportedly show that Pruitt traveled on government business dozens of time on first-class and domestic flights from August 2017 through February 2018.The reported expenses include a four-day, ,631 trip to Morocco in December, a series of first-class flights following Hurriciane Harvey totaling ,330, and a two-day domestic trip for media interviews and a visit to Florida that amounted to ,767. Pruitt's travel expenses listed in the records reportedly do not include the costs of his security team or aides who travel with him.The EPA justified the travel spending as necessary to ensure Pruitt's security."EPA's Protective Service Detail identified specific ongoing threats associated with Administrator Pruitt's travel and shifted his class based on certain security protocols that require him to be near the front of the plane," said Jahan Wilcox, a spokesperson for the agency.Previously, CNN reported that from June through August 2017, the EPA justified several expensive charter flights for Pruitt -- including a ,000 bill for a business trip around his home state.In late August, the EPA inspector general announced it would investigate Pruitt's travel practices. Since beginning the probe, the IG has twice expanded its scope, which now encompasses all of Pruitt's 2017 taxpayer-funded travel.According to an earlier Post analysis of other EPA records, Pruitt's travel choices distinguish him from his predecessors in that he brings a larger group of aides with him on trips, he usually flies first or business class on international and domestic trips, and he often flies Delta Airlines even though the government has contracts with certain airlines on specific routes.In response to the travel probes, earlier this month Pruitt said he'll be seeking alternative accommodations -- including potentially flying in coach class -- on his "very next flight."Other Trump administration Cabinet secretaries have attracted scrutiny of their travel spending, including Interior Secretary Ryan Zinke, Veterans Affairs Secretary David Shulkin, Treasury Secretary Steve Mnuchin and former Health and Human Services Secretary Tom Price, who resigned after using private planes for multiple government business trips.Pruitt has also been under scrutiny for the costs the agency has accrued changing EPA headquarters, including a ,000 secure phone booth for Pruitt's calls.Other Cabinet members' spending for office renovations has been criticized recently. Zinke's office doors were to be replaced to the the tune of nearly 9,000. The department later said it would obtain the doors at a reduced price. And last month, Housing and Urban Development Secretary Ben Carson withdrew his request for a ,000 dining room set for his office. He told Congress this week that the redecorating decision was left to his wife.  3185

The Department of Homeland Security formally requested that the Pentagon extend the deployment of active-duty troops on the southern border Friday, potentially extending their deployment 45 days beyond the original deadline of December 15."Given the ongoing threat at our Southern border -- today the Department of Homeland Security submitted a request for assistance to the Department of Defense to extend its support through January 31, 2019," Department of Homeland Security spokeswoman Katie Waldman told CNN in a statement."This request refines support to ensure it remains aligned with the current situation, the nature of the mission, and (Customs and Border Protection) operational requirements," she added.The Pentagon confirmed receipt of the request but said Secretary of Defense James Mattis had yet to sign off on it:"We have received the Request for Assistance from the Department of Homeland Security, it is with the Secretary (of Defense) for consideration."There are currently some 5,600 troops at the border, divided among Texas, California and Arizona.President Donald Trump sent the troops after spending the weeks leading up to the midterm elections decrying a procession of migrants that was still thousands of miles from the US border. Last week, Trump granted the troops new powers to aid in "crowd control, temporary detention and cursory search" while protecting Customs and Border Protection personnel from the migrants, should they engage in violence.Defense officials have suggested that some of the troops, primarily engineers involved in enhancing infrastructure at points of entry, could be drawn down in the relative near term as those tasks are completed.Two officials tell CNN that the number of trumps assigned to the mission is likely to drop to 4,000 as a result.Other functions, including helicopter support to help move Customs and Border Protection personnel to different areas along the border, are likely to continue.The deployment's extension means the Pentagon's initial cost estimate of million for the border deployment is likely to increase as that estimate was based on the mission ending on December 15. 2175