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North Korea has agreed to refrain from conducting nuclear and missile tests while engaging in dialogue with South Korea, Seoul's national security chief Chung Eui-yong said Tuesday after returning from a meeting with North Korean leader Kim Jong Un.Chung added that Pyongyang also expressed willingness to talk to the United States "in an open-ended dialogue to discuss the issue of denuclearization and to normalize relations with North Korea."Chung said that as part of the dialogue, the two Koreas would hold a summit next month, the first of its kind in more than a decade.The last inter-Korean summit was in 2007, when South Korean President Roh Moo-hyun met Kim's father, late North Korean leader Kim Jong Il.The meeting will be held at the Panmunjom Peace House on the South Korean side of the demilitarized zone that divides the two countries, Chung said.Pyongyang and Seoul will also open a communication hotline that will enable Kim and South Korean President Moon Jae-in to speak directly.Moon sent Chung and four other top government officials to Pyongyang Monday, when they met with Kim and some of his top aides.It's believed to be the first time the young North Korean leader has ever met with any officials from South Korea since taking power in 2011.Developing story - more to come  1312

NEW YORK CITY — An ailing swan in Queens was able to get help thanks to a trained wildlife rescuer and the New York City subway.Ariel Cordova-Rojas was on a bike ride around Jamaica Bay last Thursday when she noticed a swan sitting apart from others along the shore."It seemed odd, but swans can be solitary," Cordova-Rojas said. "As I got closer, she stayed stationary. They're usually aggressive and territorial, you can't get close without them trying to attack, and I knew something was wrong."She estimates she carried the 17-pound bird about a mile to the ranger station. Two Good Samaritans helped give her a lift to the subway station at Howard Beach, which she rode about 10 stops to Nostrand Ave;.Cordova-Rojas has worked at the Wild Bird Fund on Columbus Ave. in the Upper West Side of Manhattan, and knew they could care for the swan there. More of her friends helped complete the trip by car.Once arriving at the Wild Bird Fund, researchers diagnosed her with lead poisoning. They hope to return her to Jamaica Bay soon.Because she found the swan in Jamaica Bay, Cordova-Rojas has taken to calling her "Bae."Wild Bird Fund Director Rita McMahon said it has been a busy year, even with the pandemic."We have more birds than last year," she said.This story was originally published by Greg Mocker on WPIX in New York City. 1341

New research suggests that antibodies the immune system makes to fight the new coronavirus may only last a few months in people with mild illness, but that doesn’t mean protection also is gone or that it won’t be possible to develop an effective vaccine.“Infection with this coronavirus does not necessarily generate lifetime immunity,” but antibodies are only part of the story, said Dr. Buddy Creech, an infectious disease specialist at Vanderbilt University. He had no role in the work, published Tuesday in the New England Journal of Medicine.The immune system remembers how to make fresh antibodies if needed and other parts of it also can mount an attack, he said.Antibodies are proteins that white blood cells called B cells make to bind to the virus and help eliminate it. The earliest ones are fairly crude but as infection goes on, the immune system becomes trained to focus its attack and to make more precise antibodies.Dr. Otto Yang and others at the University of California, Los Angeles, measured these more precise antibodies in 30 patients diagnosed with COVID-19 and four housemates presumed to have the disease. Their average age was 43 and most had mild symptoms.Researchers found that the antibodies had a half-life of 73 days, which means that half of them would be gone after that much time. It dovetails with a previous report from China also suggesting antibodies quickly fade.The results “call for caution regarding antibody-based ‘immunity passports,’ herd immunity, and perhaps vaccine durability,” the California authors write.That’s true, Creech said, but other parts of the immune system also help confer protection. Besides churning out antibodies, B cells develop a memory so they know how to do that again if needed.“They would get called into action very quickly when there’s a new exposure to the virus. It’s as if they lie dormant, just waiting,” he said.Other white blood cells called T cells also are better able to attack the virus the next time they see it, Creech said.Although circulating antibodies may not last long, what we need to know is if and how people remake antibodies if exposed to the coronavirus again and if they protect against another infection, Alison Criss, an immunologist at the University of Virginia, wrote in an email. “We also need to know if there is a protective T cell response” that reappears.Vaccines, which provoke the immune system to make antibodies, might give longer-lasting protection than natural infection because they use purified versions of what stimulates that response, she noted.Creech agreed.“This shouldn’t dissuade us from pursuing a vaccine,” he said. “Antibodies are only a part of the story.”___Marilynn Marchione can be followed on Twitter at http://twitter.com/MMarchioneAP___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. 2967

NEW YORK CITY — The principals and teachers unions are calling for New York City to delay school reopening for at least a month.While most major cities have opted to start the school year virtually, New York City still plans on resuming in-person. Mayor Bill de Blasio responded while touring Village Academy in Far Rockaway, Queens on Wednesday with Schools Chancellor Richard Carranza."Unions will always sound various alarms and unions will say things sometimes in a very dramatic fashion, this is nothing new in New York City," de Blasio said. "But the question is really, what is the mission? The mission is to take care of our kids."Jacob Stebel, a high school film teacher in the Bronx, said a pod system, where students would be taught in groups in a single classroom, won’t work with high schoolers.“Students will be grouped by the classes they have to take together, instead of students moving from classroom to classroom, teachers are moving from classroom to classroom," Stebel said.That would put him in six to seven different classrooms a day with just as many groups of students.“If I have to go into eight different classrooms a day, I have to set up my materials again,” he said.According to the mayor and city’s top educator, with a month to go, they’re still working through the details."One of the things we're working on right now, and, again, with a month to go, is how can we compress things so even at the middle school and high school level, there's less movement," de Blasio said. "And it might look different than a normal school year, but it's the – we just need to get one school year in, in this fashion."De Blasio maintained the first day of school would be Sept. 10.This article was written by Jennifer Bisram for WPIX. 1759

NORFOLK, Va. (AP) — A company’s plan to retrieve the Titanic’s radio has sparked a debate over whether the famous shipwreck still holds human remains. Lawyers for the U.S. government have raised the question during their ongoing court battle to block the planned expedition. They cite archaeologists who say remains could still be there. The lawyers say RMS Titanic Inc. fails to consider that in its dive plan. But the company says human remains likely would’ve been noticed after roughly 200 dives to the site. The company also says remains would've dissolved in the harsh ocean environment. The luxury ocean liner sank in 1912 after striking an iceberg in the North Atlantic. 686

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