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A new study finds that horse whinnies are made of both a high and a low frequency, generated by different parts of the vocal tract. The two-tone sound may help horses convey more complex information.

President Trump promised his "Make America Great Again" voters an "America First" foreign policy. With the war in Iran, he's testing MAGA world's willingness to be flexible on one of its core beliefs.

The Justice Department has published additional Epstein files related to allegations that President Trump sexually abused a minor after an NPR investigation found dozens of pages were withheld.

Sudan's capital city Khartoum has been liberated after more than two years of civil war. But as NPR's Emmanuel Akinwotu witnessed when he travelled there, it has been left in ruins.

Scientists and investors born outside the U.S. played crucial roles in the development of COVID-19 vaccines — a remarkable vindication for the argument that innovation depends on immigration.

Schools are grappling with how to prepare students for the possibility of gun violence without traumatizing them.

Experts in the mortgage industry are skeptical. Buyers would pay less each month, but would end up paying more over time. Here's what to know about the proposed 50-year mortgages.

Relations between the two neighbors hit a low point this month, with fighting killing people on both sides of the border. At issue is a rise in militancy in Pakistan since the Taliban took over Afghanistan.

The World Food Programme, a U.N. agency and a Nobel Peace Prize winner, is facing cuts in its budget that experts are describing as "unprecedented."

The brown bears of Katmai National Park and Preserve in Alaska have been bulking up for hibernation. If Congress doesn't approve a funding deal, Fat Bear Week will be put on hold.