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Researchers knew the HIV outbreak in the small town of Austin, Ind., was related to IV drug use. Mapping how the virus mutated over time revealed its path — and how it might have been stopped.

The House Rules Committee will hold two days of hearings this week over whether Congress should reconsider the 2011 earmark ban.

"I don't think India wants to be a formal U.S. ally," says Alyssa Ayres, author of Our Time Has Come: How India Is Making Its Place in the World. "It sees alliance relationships as too constraining."

The Pegasus Airlines flight was derailed off the tarmac as it landed and went hurtling over a cliff, leaving the aircraft dangling over the Black Sea nose first.

When preparing to take the oath of office, President Trump promised to make no new foreign business deals. But a year later, ethics experts say the problems have not been solved in any meaningful way.

The 16th century epidemic, likely set off or exacerbated by European invaders, was one of the most deadly in human history. New evidence traces it to a type of salmonella that causes a deadly fever.

The lead singer of the popular Irish band died suddenly Monday in London. The Westminster coroner said on Friday that it is awaiting test results, and has adjourned its hearing until April 3.

Few scientific discoveries have caused as much excitement as that of editing our genes; yet we owe some of the most stunning wonders around us to old-fashioned breeding practices, says Jimena Canales.

In 1957, three years after the Supreme Court declared segregated schools unconstitutional, Melba Pattillo Beals was one of nine black students who integrated Central High School in Little Rock, Ark.

Between sexual harassment scandals, fake ads and stronger calls for regulation, Big Tech had a rocky year in 2017. LinkedIn Co-founder and venture capitalist Reid Hoffman talks with NPR's Kelly McEvers about resolutions Silicon Valley should make in 2018.