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Homes with dirt floors can make people sick. Replacing them with concrete floors helps cut risks but isn't always affordable. A new project in Rwanda relies on a low-cost alternative.

Companies including PayPal and Apple are competing to convince merchants and consumers to use their swipe-and-go mobile payment systems. Credit card breaches may speed up the use of digital wallets.

Democrats see an opportunity in the South's changing demographics — particularly in states with growing Hispanic communities, lots of unregistered black voters and migration from other states.

Scientists wince when people blame every big tropical cyclone, heat wave or drought on a shifting climate. But now some are trying to figure out just what the evidence for such a link would be.

Sympathy for former Rep. Gabrielle Giffords, who was shot in the head in 2011, helped get her successor elected. Now she lobbies for tighter gun laws, and a tough ad from her PAC has stirred anger.

The midterm elections are less than a month away, and across the country, governors are in trouble. In both parties, state chief executives are facing tough re-election fights.

At the U.S. Open, two female tennis players have reached their first Grand Slam semifinals. David Greene talks to Courtney Nguyen, a contributing writer for Sports Illustrated.

S. Truett Cathy's Chick-fil-A has now grown to $5 billion in annual sales, and its stores still close on Sundays, reflecting its founder's religious beliefs.

The assault by former Baltimore Ravens running back Ray Rice on his then-fiancee was public knowledge. But new video released by TMZ on Monday defined the story, says NPR's David Folkenflik.

The collaborative project made by rapper Royce Da 5' 9" and producer DJ Premier is in actual fact a hardcore rap fan's dream come true.