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Engineers have developed a low-cost material that efficiently sterilizes and desalinates water using only solar energy. The secret to the new technology is likely sitting right on your desk.

Rumors are swirling about the unveiling of the newest iPhone this Tuesday. But will it be enough to keep Apple at the top of the pack? NPR's Lynn Neary talks with Farhad Manjoo of the New York Times.

Gas prices are falling — and so are hybrid car sales. Analysts say better gas mileage for traditional vehicles, combined with low gas prices, is giving hybrids a run for their money.

A sign of a robust economy that ultimately lifts all boats — or a force that prevents low- and middle-income people from advancing? Experts debate income inequality for Intelligence Squared U.S.

After a major investigation into America's nuclear forces, Secretary of Defense Chuck Hagel says that he will be investing billions of dollars into the system, and changing to the way it's managed.

It's Perfectly Normal, a 20-year-old illustrated sex-ed book for kids, is meant to teach children about sexual health, puberty and relationships. It's one of the most banned books in America.

The very first Formula E all-electric car race took place over the weekend in Beijing. Promoters hope the 10-race series around the globe will boost sales of alternative fuel cars.

Israel and Hamas have agreed on a cease-fire, which raises hopes of an end to the seven-week war in Gaza that has killed more than 2,000 people.

In a survey of 96 countries on how their over-60 citizens fare, some rankings were completely predictable: Norway was first and Afghanistan was last. In between, there are a number of surprises.

The government says free expression can combat radicalization. Yet a military court recently sentenced a man to 18 months in prison for a Facebook post deemed insulting to the United Arab Emirates.