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Nadezhda Sergeeva of Russia has tested positive for a banned substance and has been disqualified from the Winter Olympic Games in Pyeongchang, the Court of Arbitration for Sport said Saturday.

Sergeeva was ranked 12th in the women's bobsleigh, but is now disqualified from the event and "the results obtained" by her team "at the same event are disqualified with all resulting consequences," the organization said in a statement.

With a gold medal in the snowboard parallel giant slalom, Ester Ledecka of the Czech Republic has become the first woman in Winter Olympics history to win a gold medal in two different sports at the same Olympic Games.

On Saturday she emerged victorious in the final run against Germany's Selina Joerg, finishing just 0.46 seconds ahead. Joerg took silver in the event, followed by Ramona Theresia Hofmeister, also of Germany, who took bronze.

Updated at 4:05 a.m. ET

The U.S. men's curling team is making history on Saturday at the Pyeongchang Winter Olympics, playing in the first gold medal curling game ever to feature an American team. Led by John Shuster, the U.S. takes on Sweden, which is also seeking its first gold for the men's team.

As a nation of nascent curling fans looks on, we'll be updating this story from the Gangneung Curling Center in South Korea. (If you're new to curling, skip to the bottom of this page for some tips.)

Nearly four months after their billionaire owner shut them down, local news sites Gothamist, LAist and DCist will come back to life under new ownership: public radio stations.

WNYC in New York will buy Gothamist, Southern California's KPCC will acquire LAist, and WAMU in Washington, D.C., is taking over DCist.

Last fall, the U.S. Food and Drug Administration started looking for dangerous bacteria in a few of America's most beloved fresh foods: parsley, cilantro, basil, and prepared guacamole. The very freshness of these foods carries a risk. Since they aren't normally cooked, they may harbor nasty bugs like salmonella and Listeria monocytogenes.

This winter, the Syrian government regained control over the entire city of Aleppo. For years before that, it was the largest urban stronghold of anti-regime rebels. Over those years, there were countless government bombings, and the city was reduced to rubble.

The documentary Last Men In Aleppo, by Syrian filmmaker Feras Fayyad, takes viewers inside the city. "I grew up in the countryside of Aleppo," he says. "And Aleppo — it's my city, where I know every single street and every single store."

The Seychelles have brokered a novel deal that will allow the island archipelago to swap millions of dollars in sovereign debt for protecting nearly one third of its ocean area.

It's hailed as the first of its kind. "Seychelles is clearly breaking new grounds and with it, it has positioned itself as a world leader in ocean governance and management," Seychelles vice president Vincent Meriton said in remarks announcing the new protections.

Copyright 2018 NPR. To see more, visit http://www.npr.org/.

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Copyright 2018 NPR. To see more, visit http://www.npr.org/.

MARY LOUISE KELLY, HOST:

Copyright 2018 NPR. To see more, visit http://www.npr.org/.

MARY LOUISE KELLY, HOST:

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