梅州2个月打胎需多少钱(梅州专业治疗盆腔炎) (今日更新中)

WASHINGTON (AP) — For decades, there were tales from fishermen and tourists, even lots of photos, of a mysterious killer whale that just didn't look like all the others, but scientists had never seen one.Now they have.An international team of researchers says they found a couple dozen of these distinctly different orcas roaming in the oceans off southern Chile in January. Scientists are waiting for DNA tests from a tissue sample but think it may be a distinct species.The National Oceanic and Atmospheric Administration felt confident enough to trumpet the discovery of the long rumored killer whale on Thursday. Some outside experts were more cautious, acknowledging the whales are different, but saying they'd wait for the test results to answer the species question."This is the most different looking killer whale I've ever seen," said Robert Pitman, a NOAA marine ecologist in San Diego. He was part of the team that spotted the orcas off Cape Horn at the tip of South America.How different? The whale's signature large white eye patch is tiny on these new guys, barely noticeable. Their heads are a bit more rounded and less sleek than normal killer whales and their dorsal fins are narrower and pointed.They likely mostly eat fish, not marine mammals like seals, as other killer whales do, Pitman said. Fishermen have complained about how good they are at poaching off fishing lines, snatching 200-pound fish away.Pitman said they are so different they probably can't breed with other killer whales and are likely a new species. At 20 to 25 feet long (6 to 7.5 meters), they are slightly smaller than most killer whales. In the Southern Hemisphere, killer whales are considered all one species, classified in types A through C. This one is called type D or subantarctic killer whales.Michael McGowen, marine mammal curator at the Smithsonian, said calling it a new species without genetic data may be premature. Still, he said, "I think it's pretty remarkable that there are still many things out there in the ocean like a huge killer whale that we don't know about."Scientists have heard about these distinctive whales ever since a mass stranding in New Zealand in 1955. Scientists initially thought it could be one family of killer whales that had a specific mutation, but the January discovery and all the photos in between point to a different type, Pitman said.He said they are hard to find because they live far south and away from shore, unlike most killer whales."The type D killer whale lives in the most inhospitable waters on the planet. It's a good place to hide."Pitman got interested in this mysterious killer whale when he was shown a photograph in 2005. When he and others decided to go find them, they followed the advice and directions of South American fishermen, who had seen the whales poaching their fish.After weeks of waiting, about 25 of the whales came up to the scientist's boat, looking like they expected to be fed. Equipment problems prevented the scientists from recording enough of the whale songs, but they used a crossbow to get a tissue sample. Pitman said the whales are so big and their skin so tough that it didn't hurt them, saying the arrow "is like a soda straw bouncing off a truck tire."Pitman said he'll never forget Jan. 21 when he finally saw his first and then a bunch of the type D orcas."For 14 years I was looking for these guys. I finally got to see them," Pitman said.He acknowledged that he did sound like the revenge-seeking captain in the classic novel "Moby-Dick.""I guess I know how Ahab felt, but for a good reason," Pitman said. 3606

WASHINGTON — During his opening comments at a Congressional hearing on Tuesday, Dr. Anthony Fauci — the nation's top infectious disease expert — reiterated his confidence that a viable vaccine for COVID-19 would be developed by the end of the calendar year.Fauci says he believes that "it will be when, not if" that there will be millions of doses of a viable vaccine available by the end of 2020.Fauci made those comments Tuesday before the House Committee on Energy and Commerce. He is testifying along with Dr. Robert Redfield, the head of the Centers for Disease Control and Prevention, and Dr. Stephen Hahn, the head of the Food and Drug Administration.The hearing comes as coronavirus cases are rising in about half the states and political polarization is competing for attention with public health recommendations.The nation is emerging from weeks of stay-at-home orders and business shutdowns. But that's being done in an uneven way, with some states far less cautious than others.Fauci, formerly a fixture at daily coronavirus briefings held by the Trump administration at the White House, has continued to make regular media appearances. However, he has not appeared on camera at the White House in several weeks.The hearing takes place just days after President Donald Trump said at a rally on Saturday that he asked officials in his administration to "slow down" testing capacity in order to keep the number of confirmed cases steady. During a briefing on Monday press secretary, Kayleigh McEnany said that Trump's comments were made "in jest."However, in an interview with Scripps national politics editor Joe St. George, Trump did not specifically say if he asked officials to slow down testing, but added that "if it did slow down, frankly, I think we're way ahead of ourselves." 1803

Want to know how old your dog is in human years? A new study states that calculating every dog year isn't equal to 7 human years.That's because your dog ages differently than you.Researchers at the University of California San Diego’s school of medicine said in a news release that a 1-year-old dog is similar to a 30-year-old person. But a 4-year-old pup is identical to a 52-year-old human."The formula is based on the changing patterns of methyl groups in dog and human genomes — how many of these chemical tags and where they’re located — as they age," researchers said in the release. "Since the two species don’t age at the same rate over their lifespans, it turns out it’s not a perfectly linear comparison, as the 1:7 years rule-of-thumb would suggest."This graph formula, which was created from the study, will match up the age of your dog with the comparable human age.Lead researcher Trey Ideker said that dogs that are younger age faster compared to humans.“This makes sense when you think about it — after all, a nine-month-old dog can have puppies, so we already knew that the 1:7 ratio wasn’t an accurate measure of age," Ideker said.For the new study, which was published in the journal Cell Systems, samples of blood from 105 Labrador retrievers were studied.Researchers plan to study other dog breeds to see if their method holds up. 1359

WASHINGTON (AP) — A second Republican senator has come out in opposition to filling a vacant Supreme Court seat before the Nov. 3 election. And Speaker Nancy Pelosi is asserting without details that the Democratic-led House has “options” for stalling or preventing President Donald Trump from quickly installing a successor to the late Justice Ruth Bader Ginsburg. GOP Sen. Lisa Murkowski of Alaska says that “for weeks, I have stated that I would not support taking up” a potential nomination as the presidential election neared. “Sadly, what was then a hypothetical is now our reality, but my position has not changed.” 629

Voters are again set to render a verdict on the direction they would like to take the country.They turned out in record numbers for early voting, and polls open for Election Day have been steadily busy.Two years into Trump's tempestuous presidency, Democrats are targeting their best election results in six years. But given uncertainty over the quality of polling, questions over the makeup of the electorate and Trump's talent for busting political norms, no one can say for sure how the election will play out.Click here to see photos from around the country as people turned out to cast their ballots. 618

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