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Many cities are converting to LED streetlights. The move can help restore darker skies and make stars visible again, and they also save energy and money. But some LEDs emit light that disrupts sleep.

On Election Day, Democrats lost their last statehouse in the South when the GOP won a sweeping victory in Kentucky. Democrats now have to figure out how to appeal to rural voters.

"They'll continue to be wildly successful in the business world," Kellyanne Conway tells NPR's Audie Cornish, saying concerns about conflicts of interest are unfounded.

The prevalence of Alzheimer's and other dementias declined by almost 3 percent from 2000 to 2012, a study finds. That could be a result of people getting more education, and better health overall.

President-elect Trump has said a top priority is to freeze hiring for the federal government. But even those who support reducing the federal workforce say that a freeze can have unintended effects.

A world-record stampede of origami elephants has arrived at the Bronx Zoo, as part of a campaign to raise awareness about poaching.

The Georgia Democrat says he almost cried when he realized his visit to Nashville included an unexpected gift. Leaders presented him with an artifact from his early days of civil rights activism.

Rudy Giuliani is a leading contender for secretary of state in a Trump administration, but as mayor of New York he waded into conflicts with Yasser Arafat and parking scofflaws at the United Nations.

Voters in an online poll have declared the airport in Minneapolis-St. Paul to have "America's Best Restroom." The poll was run by Cintas, a company that makes bathroom products.

Since 1892, Vigo County in Indiana has voted for the winning presidential candidate in every election but two. What did the voters there see about Donald Trump's candidacy?