宜宾激光脱毛哪里好(宜宾隆鼻修复哪家医院好) (今日更新中)

SEATTLE (AP) — U.S. scientists said Friday they will investigate why an unusual number of gray whales are washing up dead on West Coast beaches.About 70 whales have been found dead so far this year on the coasts of California, Oregon, Washington and Alaska, the most since 2000. About five more have been discovered on British Columbia beaches. That's a very small fraction of the total number of whales believed to have died, because most simply sink and others wash up in such remote areas they're not recorded.NOAA Fisheries on Friday declared the die-off an "unusual mortality event," providing additional resources to respond to the deaths and triggering the investigation."Many of the whales have been skinny and malnourished, and that suggests they may not have gotten enough to eat during their last feeding season in the Arctic," agency spokesman Michael Milstein told reporters during a conference call.The eastern North Pacific gray whales were removed from the endangered species list in 1994, after recovering from the whaling era.The population has grown significantly in the last decade and is now estimated at 27,000 — the highest since surveys began in 1967. That has raised questions about whether their population has reached the limit of what the environment can sustain. Another theory suggests that the loss of Arctic sea ice due to global warming is a culprit.The whales spend their summers feeding in the Arctic before migrating 10,000 miles (16,000 km) to winter off Mexico. Though they eat all along their route, they are typically thinning by the time they return north along the West Coast each spring.They eat many things, but especially amphipods, tiny shrimp-like creatures that live in sediment on the ocean floor in the Arctic. For many years, researchers noted that fewer calves tended to be born following years when the ice in the Chukchi Sea, north of the Bering Strait between Alaska and Russia, was late to melt. The whales had less time to feast because they couldn't access the feeding area, and thus had less blubber to sustain them on their next migration.Last year, though, the Artic was unusually warm. The whales weren't blocked from the feeding area, and yet are still struggling this year. That has scientists wondering if the loss of sea ice has led to a loss of algae that feed the amphipods. Surveys show the amphipod beds moving farther north, said Sue Moore, a biological oceanographer at the University of Washington."The sea ice has been changing very quickly over the last decade or so," she said. "The whales may have to shift to other prey, such as krill or other things they eat."In an average year, about 35 whales wash up in the U.S.In 2000, more than 100 did, prompting NOAA to declare an "unusual mortality event" then as well. The resulting investigation failed to identify a cause. The die-off followed strong changes in ocean conditions in the mid-1990s, suggesting that warmer water patterns affected the availability of prey, but scientists were often unable to perform necropsies, Moore said."It's sometimes very difficult to get to these whales in a timely fashion," she said. "You can't always get the kind of samples you would need for diagnostic reasons."Since then, researchers have built up an improved network of volunteers and have better educated the public to help report and respond to whale deaths, said Deborah Fauquier, veterinary medical officer at NOAA's Office of Protected Resources. This time around, scientists have been able to perform necropsies on 20 of the whales, she said.John Calambokidis, a research biologist with the Cascadia Research Collective, noted that as the whales search farther afield for food, they've entered areas where they're not normally seen so often, including San Francisco Bay and Puget Sound. That puts them at higher risk of being struck by ships or entangled in fishing gear.Four of the 10 gray whales found dead near San Francisco this year were struck by ships, and a number of shipping companies have slowed their vessels in the area to avoid collisions. 4086

SCRIPPS — For almost 75 years, the stern of the destroyer USS Abner Read lay somewhere below the dark surface of the Bering Sea off the Aleutian island of Kiska, where it sank after being torn off by an explosion while conducting an anti-submarine patrol.Seventy-one U.S. Navy sailors were lost in the aftermath of the blast, during a brutal and largely overlooked early campaign of World War II.Heroic action by the crew saved the ship, but for the families of the doomed sailors, the final resting place of loved ones lost in the predawn hours of Aug. 18, 1943, remained unknown.On July 17, a NOAA Office of Exploration and Research-funded team of scientists from Scripps Institution of Oceanography at the University of California San Diego and the University of Delaware aided by four U.S. Navy sailors assigned to the Naval Special Warfare Group discovered the missing 75-foot stern section in 290 feet of water off Kiska, one of only two United States territories to be occupied by foreign forces in the last 200 years.“This is a significant discovery that will shed light on this little-known episode in our history,” said retired Navy Rear Adm. Tim Gallaudet, PhD, acting undersecretary of commerce for oceans and atmosphere and NOAA administrator. “It’s important to honor these U.S. Navy sailors who made the ultimate sacrifice for our nation.”Abner Read was on patrol at about 1:50 a.m. when the massive explosion — presumed to be from a Japanese mine — ripped the destroyer apart. Somehow the crew kept the main part of Abner Read’s hull watertight, and two nearby Navy ships towed it back to port.“This was catastrophic damage that by all rights should have sunk the entire ship,” said?Sam Cox, curator of the Navy and director of the Naval History and Heritage Command.Within months, the destroyer was back in the war.It went on to fight in several battles in the Pacific Theater before being destroyed in November 1944 by a Japanese dive bomber in a kamikaze attack during the battle of Leyte Gulf. Abner Read received four battle stars for her World War II service.Meanwhile, the ship’s shorn stern was lost but not forgotten. Finding it was a primary goal of the July mission to document the?underwater battlefield off Kiska.In addition to NOAA and Scripps, the project was supported by Project Recover, a public-private partnership that uses 21st-century science and technology and archival and historical research to find the final underwater resting places of Americans missing in action since WWII.Historians have been able to study battles on Kiska and Attu, the Aleutian islands that were attacked and occupied by as many as 7,200 Japanese forces from June 1942 to mid-August 1943, but this Kiska mission was the first to thoroughly explore the underwater battlefield.Many ships, aircraft and submarines from both the United States and Japan were lost during a punishing 15-month campaign to reclaim this distant windy and fogbound corner of America.Now, recent advancements in undersea technology, many developed by the Office of Naval Research, are helping to reveal the forgotten histories of long-ago valor.After multibeam sonar mounted to the side of the research ship?Norseman II identified a promising target, the team sent down a deep-diving, remotely operated vehicle to capture live video for confirmation.“There was no doubt,” said expedition leader Eric Terrill, an oceanographer at?Scripps Institution of Oceanography and co-founder of Project Recover. “We could clearly see the broken stern, the gun and rudder control, all consistent with the historical documents.”“We’ve entered a new age of exploration,” added Mark Moline, director of the?School of Marine Science and Policy at the University of Delaware and co-founder of Project Recover. “New sensors and improved underwater robots that can bring back real-time images are driving new discoveries.”Wrecks like Abner Read are protected from activities that disturb, remove, or damage them or their contents by the?Sunken Military Craft Act of 2004, though exceptions can be made for activities that have archaeological, historical, or educational purposes.The twisted metal and sharp edges of sunken military wreckage can pose life-threatening risks to divers, but according to the Naval History and Heritage Command, there’s a more important reason to protect sites like the Abner Read. They are often war graves, recognized by the U.S. Navy as the fit and final resting place for those who perished at sea.“We take our responsibility to protect those wrecks seriously,” said Cox. “They’re the last resting place of American sailors.” 4715

Scientists have discovered a pocket sized dinosaur forerunner that was just 4 inches tall. Named Kongonaphon kely, which means tiny bug slayer, the creature looked like a dinosaur but scampered the Earth earlier, predating both dinosaurs and flying pterosaurs. The fossils, dug up in Madagascar, date from 237 million years ago, according to a study Monday in the journal Proceedings of the National Academy of Sciences. 429

SAN FRANCISCO (AP) — The University of California’s governing board is unanimously backing a measure that would restore affirmative action programs at its schools. The proposed ballot measure would repeal the controversial voter-approved statewide ban that's been blamed for a decline in diversity in the prestigious university system. The vote Monday by the university system's Board of Regents means the UC endorses a proposal that would ask voters in November to repeal 1996's Proposition 209 that banned “preferential treatment” for minority groups applying to state colleges and government jobs. The state Assembly approved the measure last week and it still must pass the state Senate to go on the Nov. 3 ballot. 726

Scott Thompson never thought making other people smile would be so much fun.“I never thought it would be awesome for myself too. You know, I didn’t know that I would be as happy it as I am," Thompson said.But it’s never too late for an old farmer to learn a new trick.“We started out with a small field, about three or four acres,” he said. Scott and his wife own Thompson Strawberry Farm in Wisconsin, normally a pick-it-yourself berry farm. But because of COVID-19, they decided to plant a field of sunflowers so people could come get out of the house, enjoy the sunflower fields and smile.“People are going to need a release. People are going to need a place to go and we’re just fortunate that we have that opportunity to give it to somebody,” said Thompson.But one field turned into another.“Then we put in three or four more fields,” said Thompson.Turned into 2.2 million sunflowers.“It just kind of added up and kept going and kept going so I just kept planting,” said Thompson.The sunflowers are helping people get out of the house during the pandemic“We just wanted some sunshine in corona, it’s an easy activity to do that’s not in doors,” said Kate Kronstein, who was visiting the field with her mom. “Road trip. Can’t do anything else these days!” said John Poquette, up from Chicago.People have been coming from mostly Illinois, but all over the Midwest to come snip some sunflowers and take a bright bouquet from the farm.It’s per car to get in, and that comes with a dozen pick-em-yourself sunflowers. But Scott says you can do more than just pick sunflowers while you’re here.“Everybody just seems like they have their little niche of what they want to do. I bet we’ve had five or six different proposals, we’ve had wedding photographers, we’ve had senior pictures, family pictures, so we’re really just trying to spread that fun for everyone,” said Thompson.And when you leave, they want you to take two things with you: some sunflowers and a smile.“It made me happy, and it just gave me a reminder that there’s still sunshine out there, even with everything going on,” said Kronstein smiling as she got ready to leave. 2149

来源：资阳报