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阜阳治疗带状疱疹哪家医院
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发布时间: 2025-05-30 23:39:13北京青年报社官方账号
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WASHINGTON (AP) — Winter hit U.S. honeybees hard with the highest loss rate yet, an annual survey of beekeepers showed.The annual nationwide survey by the Bee Informed Partnership found 37.7% of honeybee colonies died this past winter, nearly 9 percentage points higher than the average winter loss.The survey of nearly 4,700 beekeepers managing more than 300,000 colonies goes back 13 years and is conducted by bee experts at the University of Maryland, Auburn University and several other colleges.Beekeepers had been seeing fewer winter colony losses in recent years until now, said Maryland's Dennis vanEngelsdorp, president of the bee partnership and co-author of Wednesday's survey."The fact that we suddenly had the worst winter we've had ... is troubling," vanEngelsdorp said.Some bees usually die over winter, but until the past couple decades, when a combination of problems struck colonies, losses rarely exceeded 10%, he said.Bees pollinate billion worth of U.S. food crops. One-third of the human diet comes from pollinators, including native wild bees and other animals, many of which are also in trouble, according to the U.S. Department of Agriculture."We should be concerned on multiple levels," said University of California, Berkeley, agricultural social scientist Jennie Durant, who has a separate study this week on loss of food supply for bees.Year-to-year bee colony losses, which include calculations for summer, were 40.7%, higher than normal, but not a record high, the survey found."The beekeepers are working harder than ever to manage colonies but we still lose 40-50% each year... unacceptable," Swiss bee expert Jeff Pettis, who wasn't part of the survey, said in an email.For more than a decade, bees have been in trouble with scientists blaming mites, diseases, pesticides and loss of food.This past winter's steep drop seems heavily connected to the mites, vanEngelsdorp said. Beekeepers report that chemicals that kill mites don't seem to be working quite as well and mite infestation is worsening, he said. Those mites feed on the bees' fats and that's where the insects store protein and center their immune response.Durant's study in this week's journal Land Use Policy found that changes in food supply in the Midwest's Prairie Pothole Region, a hot spot for honeybee colonies, has been a major factor in losses. That area has lost wetland areas with clover bees feed on.Other areas have been converted to corn and soy crops, which don't feed bees, she said.As bad as the survey numbers are, vanEngelsdorp said, "We're not really worried about honeybees going extinct... I'm more worried that the commercial beekeepers will go out of business." 2695

  阜阳治疗带状疱疹哪家医院   

WASHINGTON, D.C. – Miles Taylor, a former chief of staff at the Department of Homeland Security, revealed Wednesday that he's the anonymous senior Trump administration official who wrote a scathing book last year that criticizes the president."Donald Trump is a man without character. It’s why I wrote “A Warning”...and it’s why me & my colleagues have spoken out against him (in our own names) for months," Taylor announced on Twitter. "It’s time for everyone to step out of the shadows."Read Taylor's full statement here.Taylor's anonymously written book “A Warning” paints a chilling portrait of President Donald Trump as cruel, inept and a danger to the nation he was elected to lead, The Washington Post reports.The book’s description on Amazon says it was meant to motivate readers to “consider how we judge our nation's leaders, and illuminate the consequences of re-electing a commander in chief unfit for the role.”The book was published in November 2019, more than a year after The New York Times published a bombshell op-ed essay by the same anonymous author.In the op-ed, the author claimed to be among a group of people in the White House who were working to keep Trump’s reckless impulses in check for the good of the country.As “part of the resistance inside the Trump administration,” the article’s author said the group believed Trump acts in a manner that is “detrimental to the health of our democracy” and that they vowed to do what they can to “preserve our democratic institutions.”The book and article have been criticized by the president and members of his administration. It also sparked a long guessing game in Washington to figure out who the author was.The Times reports that Taylor resigned from DHS in June 2019 and then went public with his criticism of Trump this past summer. He has since endorsed former Vice President Joe Biden for president. 1890

  阜阳治疗带状疱疹哪家医院   

WASHINGTON (AP) — The number of Americans seeking unemployment benefits fell last week to 751,000, the lowest since March but a figure that remains historically high and indicates the viral pandemic is still forcing many employers to cut jobs.Unemployment Insurance Weekly ClaimsInitial claims were 751,000 for the week ending 10/24 (-40,000).Insured unemployment was 7,756,000 for the week ending 10/17 (-709,000).https://t.co/ys7Eg5LKAW— US Labor Department (@USDOL) October 29, 2020 Rising confirmed virus cases in nearly every state, along with a cutoff in federal aid, are threatening to weaken the economy in the coming months.As temperatures fall, restaurants and bars will likely serve fewer customers outdoors. And many consumers may increasingly stay home to avoid infection.Those trends could force employers to slash more jobs during the winter.Though many are still unemployed, the U.S. economy has shown signs of recovery, growing at a 33.1% annual rate in the July-September quarter, the Bureau of Economic Analysis announced Thursday. That’s the largest quarterly gain on record, The Associated Press reports.The growth comes after the historic economic plunge brought on by the pandemic in the spring, when businesses had to close and lay off workers.The Washington Post reports that the U.S. economy has recovered about two thirds of the ground it lost during the first half of the year. Though, The Post says these numbers don’t mean the economy has entirely healed or that the pace of the recovery will continue into the final quarter, especially because of the recent surge in COVID-19 cases across the nation. 1639

  

WASHINGTON, D.C. – If Joe Biden wins the presidency, the former vice president says he would rejoin the Paris Agreement on his first day in office.The United States formally withdrew from the agreement on Wednesday, as President Donald Trump promised to do last year.“Today, the Trump Administration officially left the Paris Climate Agreement. And in exactly 77 days, a Biden Administration will rejoin it,” Biden tweeted Wednesday in reaction to Trump’s actions.The agreement is a global pact that was put together by the United Nations in 2015 to help avert the threat of catastrophic climate change.The central aim is to strengthen the global response to the threat of climate change by keeping a global temperature rise this century well below 2 degrees Celsius above pre-industrial levels and to pursue efforts to limit the temperature increase even further to 1.5 degrees Celsius.Scientists say that any temperature rise over could have devastating impacts on parts of the planets, including rising sea levels, an increase in tropical storms and worsening droughts and floods.A total of 189 countries remain committed to the accord, according to The Associated Press. 1182

  

WASHINGTON (AP) — President Donald Trump says he opposes additional funding for the U.S. Postal Service, acknowledging that his position would starve the agency of money Democrats say it needs to process an anticipated surge in mail-in ballots during the coronavirus pandemic.The Republican president said Thursday on Fox Business Network’s “Mornings with Maria” that among the sticking points over a new virus relief package were Democrats’ demand for billions of dollars to assist states in protecting the election and to help postal workers process mail-in ballots.Trump said Democrats are asking for .5 billion for universal mail-in voting and billion for the Postal Service“They need that money in order to have the post office work so it can take all of these millions and millions of ballots,” Trump said in the call-in interview. “If they don’t get those two items, that means you can’t have universal mail-in voting because they’re not equipped to have it.” 980

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