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North Korean Foreign Minister Ri Yong Ho leaves his hotel in New York on Monday. Ri says President Trump's tweets amount to a declaration of war against North Korea — and that the country can now defend itself under international law. Jewel Samad/AFP/Getty Images hide caption

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Jewel Samad/AFP/Getty Images

Carmen Rivera, at left in the orange dress, sits on a cot at the Cataño shelter. She suffers from severe asthma and knee pain and has had to be rushed by ambulance to the hospital for asthma treatment twice since the hurricane. She says she feels forgotten by authorities. Greg Allen/NPR hide caption

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Greg Allen/NPR

Desperation In Puerto Rican Town Where 60 Percent Are Now Homeless

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Until it was surpassed recently by a similar instrument in China, the Arecibo radio telescope in Puerto Rico, completed in 1963, was the world's single largest. Seth Shostak/AP hide caption

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Seth Shostak/AP

Puerto Rico's Arecibo Radio Telescope Suffers Hurricane Damage

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Marines participate in an exercise during the Infantry Officer Course in August at Quantico, Va. The first female Marine to complete the course graduated on Monday. Master Gunnery Sgt. Chad McMeen/Office of Marine Corps Communication hide caption

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Master Gunnery Sgt. Chad McMeen/Office of Marine Corps Communication

Jared Kushner and his wife, Ivanka Trump, reportedly set up a private email account as their family was coming into power in Washington, D.C. They're seen here last week at left, sitting with Lara Trump and Eric Trump. Drew Angerer/Getty Images hide caption

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American gold medalist Tommie Smith (center) and bronze medalist John Carlos raise their fists in the air in a black power salute during the playing of the U.S. national anthem at the 1968 Olympics. Anonymous/AP hide caption

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Anonymous/AP

President Barack Obama speaks at the 2014 White House Correspondents' Association Dinner in Washington, D.C. Speechwriter David Litt, who helped craft the president's comedy routine that night, says, "Some of the joke is always that it's the president telling a joke." Olivier Douliery/Getty Images hide caption

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Olivier Douliery/Getty Images

A Former Speechwriter Looks Back On His 'Hopey, Changey' Years With Obama

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Food allergies are tricky to diagnose, and many kids can outgrow them, too. A test called an oral food challenge is the gold standard to rule out an allergy. It's performed under medical supervision. Michelle Kondrich for NPR hide caption

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Michelle Kondrich for NPR

This Test Can Determine Whether You've Outgrown A Food Allergy

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The American College of Obstetricians and Gynecologists calls the flu vaccine an "essential" part of prenatal care, for protection of the newborn as well as the woman. Infants typically don't get their own flu shot until age 6 months or later. Katherine Streeter for NPR hide caption

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Katherine Streeter for NPR

Pregnant Women Should Still Get The Flu Vaccine, Doctors Advise

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German Chancellor and Christian Democrat Angela Merkel appears to have lost some support because of her refugee policy that allowed more than a million asylum seekers into the country since 2015. Sean Gallup/Getty Images hide caption

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Lucille Simpson, far right, and her daughter Gwendolyn Norman, both from Detroit, Mich., wait in line to enter the Smithsonian National Museum of African American History and Cultural on the National Mall in Washington, D.C., on May 1. Pablo Martinez Monsivais/AP hide caption

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Pablo Martinez Monsivais/AP

Members of the New England Patriots — and players across the league — kneel during the national anthem before Sunday's game against the Houston Texans. Jim Rogash/Getty Images hide caption

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Paul Manafort speaks on the phone while touring the floor of the Republican National Convention on July 17, 2016, in Cleveland, Ohio. Win McNamee/Getty Images hide caption

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