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Nicolas Maduro is expelling most U.S. diplomats and demanding Americans secure visas to enter the country. Critics say it's an effort to draw attention from the nation's economic meltdown.

Cuba and Venezuela are close allies that often seemed to speak with a single voice when it came to bashing the U.S. But now they may be out of sync.

Starbucks has brought back the Pumpkin Spice Latte for its annual fall run. But why are people so obsessed with the drink? Experts say it's a matter of marketing and food science.

At the corner of Crenshaw Boulevard and 28th Street in Los Angeles, you'll find Robert Oliver wearing a Statue of Liberty costume and dancing to promote Liberty Tax Service. "I'm never embarrassed to be out here," he says. "I'm proud of what I do."

Hotter, drier summers are forcing states not used to extreme heat to find new ways to protect some of their most vulnerable residents during heat waves.

Research into why some people have strong memory well into old age suggests that their brains are different from their peers. Some parts of the brains of "superagers" responsible for attention, thinking and memory seem to be spared the typical age-related shrinkage.

In NPR's Elise Tries series, correspondent Elise Hu tries out different experiences in East Asia. In rapidly aging Japan, an edible innovation is helping seniors enjoy meals without fear of choking.

Right now, solar panels make electricity. But a team of engineers in California wants to take solar energy one step further. They're trying to create a device that uses sunlight to make a liquid fuel that goes in our gas tanks.

A bill making its way through the Senate would make more online retailers collect sales taxes. The battle over the bill pits online retailers against brick-and-mortar stores — and, in some cases, against other online sellers. Amazon has endorsed the bill, while eBay is the loudest voice against it.

It quickly became clear that the "news" was not true. There had been no explosions at the White House and President Obama was fine. But a message on the wire service's Twitter account rattled investors.