阜阳颍东区那个医院看皮肤比较好阜阳哪能治皮肤过敏,安徽阜阳皮肤专科医院好,阜阳哪个医院看去痘印号,阜阳清河广场附近的皮肤病医院,阜阳皮肤外科咨询,阜阳市白斑医院哪个好,阜阳如何治疗脸上的白点

Alaska Airlines has resumed flights in Portland and Spokane after temporarily suspending them on Monday due to hazardous air quality.In a blog post on their website, the airline company said they canceled dozens of Alaska Airlines and Horizon Air flights in Portland and Spokane.The flights were canceled on Monday at 5 p.m. PT but resumed them on Tuesday at 3 p.m. PT.Thirty-six people have now perished due to the wildfires that are ravaging California, Oregon, and Washington.The Beachie Creek fire, which is currently burning in the northern part of the state since Aug. 16, is 15% contained, according to the Oregon wildfire dashboard. 648

Adam Olgiun's mother tells 10News that her son is safe but his whereabouts are still unknown. Police are still asking for tips in their effort to find Olgiun.  172

A wooden sculpture of First Lady Melania Trump in her Slovenian hometown was burned by vandals on the Fourth of July, CNN and Reuters report.Brad Downey, the American, Berlin-based artist that commissioned the sculpture, said he received a call from officials in Sevnica, Slovenia, on July 5, who informed him that the statue had been badly burned the night before.Downey said he immediately had the statue removed and filed a police report. But he told CNN that he wasn't interested in pressing charges against those responsible."I would be curious to see who did it," Downey told CNN.In recent weeks, President Donald Trump has taken a hard line against vandals who have toppled statues and monuments to historical figures with ties to slavery or imperialism. In a divisive speech at Mt. Rushmore on July 3, Trump called those toppling such monuments as a part of a "far-left fascism" that aimed to "end America."The statue was erected in 2019 when Downey commissioned a local woodworker to carve the 25-foot sculpture out of a fallen tree trunk. While the sculpture's face isn't immediately identifiable as Melania Trump, she's depicted wearing the light-blue dress she wore to her husband's Inauguration in 2017.According to Reuters, Downey was inspired to commission the statue given Melania Trump's status as an immigrant despite her husband's hard-line stance of immigration throughout his time in office. 1420

After a difficult, monthlong journey from Central America to the US-Mexico border, dozens of asylum-seeking migrants are vowing to remain outside an immigration processing center until "every last one" is admitted into the country, an organizer with the caravan said late Sunday.Earlier, the migrants marched from Friendship Park in Tijuana, Mexico to the San Ysidro port of entry. They stood on the Mexican side; on the other side lay San Diego, California. It was the final leg for some in the caravan of hundreds of migrants, which had reached Tijuana on Tuesday.Alex Mensing, an organizer with Pueblo Sin Fronteras, which assembled the caravan, said 50 migrants were admitted to the immigration processing center on the Mexico side. However, that is incorrect. The migrants congregated on a bridge leading to the US border while waiting to be processed by American officials.Before the group arrived, US Customs and Border Protection officials said the port had already reached full capacity, and migrants trying to get into the United States may need to wait in Mexico as officials process those already in the facility.Some migrants said they had walked the last leg of the journey filled with anxiety. Others scarfed down food before they filed into the center, afraid there would be no food once they turned themselves in to border officials.One woman in a wheelchair said she was leaving a part of herself in Mexico. She didn't know where she was going, just that she was going to the United States, she said.In anticipation of the final march of a trip that has riled President Donald Trump, supporters lined both sides of the border on Sunday.The migrants say they want a better life for themselves and their children, safe from violence and poverty in their home countries. The caravan is both a humanitarian and an activist mission, as organizers created the event to draw greater attention to the migrants' plight.One such migrant is Gabriela Hernandez, a pregnant mother of two who fled Honduras and crossed Guatemala into Mexico to join the group heading north. She and her two sons left behind their friends and family and battled hunger and exhaustion along the monthlong journey."There are people who think I just woke up and said, 'Oh, I want to just go to the United States.' It's not that easy," she said.Isabel Rodriguez, 52, traveled with her two grandchildren, Anderson, 7, and Cristofer, 11, from El Salvador with the caravan over several weeks. She said she was grateful to be in Tijuana but was worried about what's ahead."I hear they are separating people who are not parents of children," she said, "but I am ready to get to the border."  2681

According to a recent paper, the Earth is caught directly in the crosshairs of a cosmic hurricane.A swarm of nearly 100 stars, accompanied by an even greater amount of dark matter, is aimed directly at our stellar neighborhood and there's nothing we can do to stop it; in fact, the vanguard is already upon us. This sounds like a perfect summer blockbuster movie, starring The Rock and Chris Pratt, or maybe Scarlett Johansson and Charlize Theron.Except this is for real. But is it a danger? Well, actually, no. Not at all. But it's potentially incredibly fascinating, with lots of interesting scientific interconnections. So, what is really going on?The story starts last April, when the Gaia satellite announced the locations and trajectories of 2 billion stars in the vicinity of the Milky Way surrounding our sun. They released the data to the public.Scientists were then able to look at the data set to see if they could spot anything peculiar. In galaxies like the Milky Way, the most common behavior is that the stars orbit the center of the galaxy in a manner broadly similar to the planets orbiting our sun. However, there are some stars that exhibit unusual motion. About a year ago, astronomers identified some "stellar streams" passing through our celestial neighborhood.One of them, called S1 (for stream 1), consists of nearly 100 stars of similar age and composition, orbiting the Milky Way in a direction exactly opposite that of normal stars. It's kind of like a handful of cars driving the wrong way down the highway, except with a much greater distance between them and with no likelihood of a collision. These stars are spread out over a few thousand light years and they will pass through the solar system's neighborhood over the course of a few million years.Astronomers identified S1 as being part of the remnants of a dwarf galaxy that collided with the Milky Way and was consumed in an epic episode of cosmic cannibalism. Dwarf galaxies are very small, typically about 1% the mass of the Milky Way. They can orbit larger galaxies and collide with the bigger galaxy, adding their mass to the parent. This is what appears to have happened in the case of S1, although the process has taken probably a billion years.Dwarf galaxies often have a disproportionately large fraction of dark matter. Dark matter is a hypothetical and still-undiscovered form of matter that interacts only gravitationally. Scientists have proposed its existence to explain many astronomical mysteries, for example the observation that most galaxies rotate faster than can be explained by the known laws of physics and the stars and gas of which they are composed.While dark matter has not yet been observed, hypothesizing its existence is the simplest and most economical explanation for myriad astronomical mysteries. Averaged over the entire universe, dark matter is thought to be five times more prevalent than the ordinary mass of stars and gas and planets.In dwarf galaxies, the fraction of dark matter is often higher. In Fornax, a well-studied dwarf galaxy orbiting the Milky Way, researchers estimate that the dark matter is between 10 and 100 times greater than the mass found in its stars.If that number holds for S1, the dark matter of the S1 stream is passing through the Earth at a much higher velocity than the more ordinary dark matter that orbits the Milky Way -- about twice as fast. It is thought that S1 dark matter is flying through the solar system at a speed of about 550 km/s, or about 1.2 million mph. While these numbers are impressive, they are misleading. Dark matter, if it exists, is extremely diffuse and it will have no discernible effect on the solar system.Because dark matter hasn't been observed yet, these velocity numbers are speculative, although they are strongly supported by a very large body of evidence. However, the prospect of high velocity dark matter flying through the Earth has suggested an opportunity to detect it.In a paper in the prestigious journal Physical Review D, researcher Ciaran O'Hare and his collaborators calculated the possibilities of discovering dark matter using both existing and proposed dark matter detectors. They considered two varieties of dark matter particles: a very heavy kind called a WIMP (weakly interacting massive particle) and a very light kind called an axion. Because the ultimate nature of dark matter is not known, it is important to be open to all possibilities.They found that the detectors they evaluated could find WIMPs for certain ranges of the particle mass. However, when they looked at the axion possibility, it appeared the prospects were even better. Because of its light mass and the manner in which an axion would interact with the detector, the apparatus simply has a better chance of seeing the axion. (If axions exist, of course.)Experiments with names like ADMX, MADMAX and ABRACADABRA are able or will be able to search for the signatures of dark matter proposed in the recent paper. They consist of technologies that are designed to interact with axions in a strong magnetic field and convert them to ordinary microwaves or radio waves that can be easily detected.It's important to remember that the S1 stream poses no credible threat to the Earth and humanity. There is no need for an action hero to save us. However, the synergy of science is staggering. A careful catalog of nearby stars has opened the prospect of a better possibility of finding and identifying dark matter, which is one of the great unanswered mysteries of modern physics. It's an amazing time we live in, in which we can study such things.\ 5625