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Carved zigzag marks on a shell found more than a century ago have drawn new interest from archaeologists. The half-million-year-old lines aren't from an animal, and might be art from Homo erectus.

Immigrants protected under President Obama's executive action will, after working for 10 years, be eligible for retirement benefits.

The encounter between Eric Garner and officer Daniel Pantaleo caused an uproar after video footage was released. It showed Garner gasping, "I can't breathe."

In parts of southern Africa, HIV has picked up mutations that slow down its ability to grow inside a person's blood. That's a good sign. But will it be enough to make a difference in the epidemic?

A neurologist's unorthodox thinking led to an experimental drug that allows trapped nerve fibers to grow again. And that growth helps amplify signals that restored movement in laboratory rats.

Lawmakers on Capitol Hill blasted the Japanese supplier Takata for refusing to participate in a national recall of its air bags. So far, the potentially deadly air bags have been recalled in warm and humid areas where they may be most likely to rupture. While Takata is resisting a nationwide recall, Honda said Wednesday it would recall all its vehicles with Takata driver-side airbags in the U.S.

NASA plans to launch an unmanned capsule named "Orion" from the Kennedy Space Center in Florida on Thursday. NASA hopes that Orion will one day carry astronauts beyond Earth's orbit and even to Mars.

If you'd like to try pepper water (it's hot hot hot) or day-old rice (it tastes better than it sounds), we've got the scoop.

Audie Cornish talks with Chris Dunn, associate legal director of the New York Civil Liberties Union, on the use of chokehold in the New York City Police Department.

Attorney General Holder, saying that this and other recent cases had frayed trust between authorities and the community, announced the investigation late Wednesday.