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China's popular messaging app, WeChat, has some 300 million users and has become a way for Chinese to rally around a cause, something that's difficult in a country with strict government controls.

Democratic Sen. Kay Hagan is in a tight contest with House Speaker Thom Tillis, a Republican. Turnout for third-party candidate Sean Haugh, a pizza delivery man, could also influence the outcome.

The Health and Human Services Office of Inspector General said it would review Medicare Advantage billing practices with an eye toward curbing overcharges.

No, really. Some serious scientists collaborated with Facebook in 2010 and found that the app added 340,000 additional voters that election cycle.

NPR is planning our holiday food coverage, and we want to know what you would find useful. What sorts of tips and tricks are you looking for? Fill out our survey and let us know.

Irek Hamidullan, a Russian Taliban member, is the first military detainee from Afghanistan to appear in a federal court.

Farmers will haul in a record-breaking harvest of soybeans and corn this year, but they could be victims of their own success: Prices for these crops, falling for months, are at five-year lows.

With the help of online data, doctors and public health officials are tracking the spread of illnesses and predicting where they might strike next. The analyses also provide clues for prevention.

Kenyan distance runners won both the men's and women's divisions of Sunday's New York City Marathon. A Harvard evolutionary biologist suggests some possible reasons why.