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The department formally announced a rule that explicitly bans the use of electronic cigarettes on commercial flights heading to or from the U.S. Previous guidance had led to some confusion.

We know eating more produce is good for your heart. Now computer models suggest slashing its price by about a third could result in dramatically lower death rates from heart disease and stroke.

Losing vision due to macular degeneration can spark many other losses, and patients are more apt to be depressed. An eye doctor discovers there are things she can do to help.

The Energy Information Administration says oil inventories are at "historically high" levels. Still, gas prices have been heading up because oil refineries are switching to more costly summer blends.

Hillary Clinton and Donald Trump look to be on their way to securing the nominations of their respective parties because they won the most delegates on Super Tuesday. NPR explains the math and what it means for the rest of the presidential primary season.

A new study finds that too little sleep boosts a signal in the body that may drive a stronger desire to eat. It's the latest evidence linking sleep deprivation to overeating and increased body weight.

Republicans say the NIH should switch funds from Ebola research to fighting Zika virusi, instead, but NIH officials balk. And a company prepares to test genetically engineered mosquitoes in Florida.

National security officials say one leader has been captured for interrogation. One official notes that sending Delta Force there "to do an in-person visit can be very helpful in getting information."

Schools are moving to high-stakes testing of social and emotional skills. Some experts say it's too soon.

In the age of Venmo and mobile deposits, checks are fading. That's having a wide impact, from the Postal Service to check-printing companies. But many still find room for checks in their lives.