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After Thursday night's Republican presidential debate, NPR policy reporters fact check the candidates' statements.

Something very big, out beyond Neptune, is warping the orbits of small, icy objects circling our sun. Astronomers haven't seen it yet, but say the culprit could be a planet with 10 times Earth's mass.

Thousands of refugee children are traveling alone through Europe. A 30-year-old woman helps some who arrive on the Greek island of Lesbos, a main gateway into the European Union for asylum-seekers.

Researchers tested whether loosening restrictions on the work schedules of doctors in training would lead to more harm to patients.

It was a mystery: How did farmers in Uganda contract a nightmare illness? A researcher found the answer. What's the best way to help them?

A new report looks at the number of anesthesiologists around the world — and finds that many countries barely have 1 per 100,000. And some have ... zero.

The 20-year-old started making viral videos; now, he has released his debut album. He owes his success, in part, to a social media-fueled youth culture revolution that prizes teen perspectives.

The "DNA Discussion Project" brings students, staff and faculty at West Chester University together to learn about their genetic heritage. For some people, the revelations are hard to digest.

Part of Melvin Caballero's journey from Honduras to the United States involved 36 hours crammed into the back of a sweltering tractor-trailer.

That Cincinnati mayoral primary in which the incumbent, John Cranley, lost by 10 percentage points to Council Member Yvette Simpson is now in the rear...