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In an astonishing discovery, astronomers used gravitational waves to locate two neutron stars smashing together. The collision created 200 Earth masses of pure gold, along with other elements.

The city, an island of relative safety surrounded by fighting, has become a hub for humanitarian aid and for people fleeing the war in the Donbas and other parts of Ukraine.

Astronaut Walter Schirra's decision to bring a Swedish-made Hasselblad on his Mercury spaceflight set the course for NASA's choice of the camera for the Apollo lunar program.

The Republican health care bill failed in part because of opposition to shrinking Medicaid. An 11-year-old girl with sickle cell anemia went to Washington, D.C., to make sure that wouldn't happen.

From Thomas Jefferson's cut-up Bible to the country's first printed hymnal, the Smithsonian's Religion in Early America exhibit wants to engage Americans with the role of religion in its first days.

For generations, the rubber tappers of the Amazon have gone about their business in a way that preserves the rain forest. Today, they are increasingly in conflict with criminal logging gangs.

NPR's Frank Langfitt, who has been driving Chinese people around Shanghai to meet a variety of people and better understand the rapidly changing country, takes his experiment to a whole new level.

A study this month showed giving extra social services to the neediest patients didn't reduce hospital readmissions. Now health advocates say that might not be the right measurement of success.

Determined to improve the way doctors connect with their patients, a new wave of innovators are using technology to match people of color with culturally competent professionals.

It often falls to health care providers to discern whether the asylum-seekers who say they've been tortured or persecuted in their homeland bear physical and psychological evidence of that harm.