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There have been nagging questions about whether nitrous oxide during surgery raises the risk of heart attacks and other problems. Now, there's some reassurance, though no definitive answer, from a study that looked at the widely used anesthetic.

After the Supreme Court ruled a key provision of the Voting Rights Act unconstitutional, champions of the law said Congress must revise and restore it. But if lawmakers were to act, how would they change the law?

The vast majority of the animals are used in studies of things like genetics and behavior. But in recent years, the scientific community has begun to feel even these studies are unnecessary.

In its latest effort to rein in the country's vibrant social media, Turkey says it has requested cooperation from Twitter and Facebook; they're not playing ball. Protesters are embracing social media — and the government has complained that such outlets won't share user data with law enforcement.

Labor-starved farmers are now eyeing lettuce-picking robots to help with the harvest. But more robots on the farm could also spell trouble for smaller producers that can't afford them.

The inventive British singer blends pop, jazz and soul on her full-length debut, Sing to the Moon.

Former New England Patriots tight end Aaron Hernandez was charged with murder on Wednesday — in the killing of 27-year-old semi-pro football player, Odin Llyod. The Patriots cut Hernandez shortly after he was arrest this morning.

Telemundo's Spanish children's version of The Voice is the network's top-rated show, and the first of its kind to be produced in the U.S. Endearing scenes of children bursting into tears or getting hugs and kisses from their coaches help set it apart from other reality TV conversion attempts.

Being able to throw stones with power and precision must have been fun for humans' early ancestors. It was essential, too, since we lack the the fangs and claws of other predators. A recent study suggests the ability to fire rocket fastballs depends on shoulder anatomy that chimps don't share.

At the turn of the 20th century, visiting a drug store meant going to a soda counter with a pharmacist. If you wanted to go shopping, you would go to a department store. Now that trend is reversing: drug stores are battling to keep consumers in the store for longer.