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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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An artist's depiction of Planet Nine. The object is thought to be gaseous, similar to Uranus and Neptune. Hypothetical lightning lights up the night side. Caltech/R. Hurt (IPAC) hide caption

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Caltech/R. Hurt (IPAC)

Astronomers Search For Giant Planet On Outer Edges Of Solar System

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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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Harrison Browne, seen here playing for the Buffalo Beauts, says he feels lucky to be part of a league that accepts him and wants him to feel comfortable. Courtesy of the National Women's Hockey League hide caption

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Courtesy of the National Women's Hockey League

An annual space law moot court competition imagines a future legal case set in space, where issues of liability and sovereignty can get extra complicated. Stocktrek Images/Getty Images hide caption

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Stocktrek Images/Getty Images

An Accident On The Moon, Young Lawyers To The Rescue

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Researchers have won a prize for discovering that a cow's genetics determine which microbes populate its gut. Some of those microbes produce the greenhouse gas methane that comes out of cow belches and farts and ends up in the atmosphere. Charlie Litchfield/AP hide caption

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Charlie Litchfield/AP

David Wildy, a prominent Arkansas farmer, in a field of soybeans that were damaged by dicamba. He says that "farmers need this technology. But right is right and wrong is wrong. And when you let a technology, a pesticide or whatever, get on your neighbor, it's not right. We can't do that." Dan Charles/NPR hide caption

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Dan Charles/NPR

Arkansas Defies Monsanto, Moves To Ban Rogue Weedkiller

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How Prepared Is The U.S. For Earthquakes?

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A jet emanating from galaxy M87 can be seen in this July 6, 2000, photo taken by the Hubble Space Telescope. J.A. Biretta, Hubble Heritage Team/NASA hide caption

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J.A. Biretta, Hubble Heritage Team/NASA

A duck-billed dinosaur skeleton, which the researchers think ate crustaceans, on display in 2009 at the Venetian Resort Hotel Casino in Las Vegas, Nevada. Ethan Miller/Getty Images hide caption

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Ethan Miller/Getty Images