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A man who had come from Liberia is now in isolation at a hospital in Dallas. Health officials in the U.S. say they are confident that this case will not trigger a wider outbreak.

Sympathy for former Rep. Gabrielle Giffords, who was shot in the head in 2011, helped get her successor elected. Now she lobbies for tighter gun laws, and a tough ad from her PAC has stirred anger.

Scientists are growing mock organs made of human cells to better study diseases and help test drugs. Researchers at Johns Hopkins are working on a gut-on-a-chip.

Two big matchups kick off Saturday in the second round of NFL playoffs. NPR's Tom Goldman updates Scott Simon on the latest, on-field and off.

Keeping blood sugar under control reduces the risk of early death for people with Type 1 diabetes, a study finds. But keeping that tight control can be hard, even for people with good health care.

China and the U.S. account for more than a third of greenhouse gases — making it vital that any broad climate plans include the pair.

Taking inspiration from college football's Southeastern Conference, Georgia's secretary of state is asking other southeastern states to join in a southern primary on March 1.

The world has been focused in recent days on Muslims who have been radicalized. Here's the story of a radical who turned moderate.

Dominic Ongwen is accused of forcing child soldiers to beat, maim and kill. Only he himself was once a victim — abducted by Uganda's Lord's Resistance Army as a 10-year-old walking home from school.

The addition of the benefit by Facebook and Apple comes as tech companies face mounting pressure to hire more women, but some warn it may increase pressure those employees feel to put off having kids.