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Oral bacteria may be determined by environment, not genes, scientists say. That's different from other parts in the body, like the gut, where bacteria may be influenced by genome or immune system.

Syria's weaponry is coming under scrutiny as Turkey bars its airspace to Syrian flights and Human Rights Watch accuses Assad forces of indiscriminately using cluster bombs in civilian areas.

Arlen Specter, the outspoken senator who started out Republican, switched to Democrat and stayed moderate throughout, has died, the AP reports. He was 82.

The five-term senator, a moderate Republican-turned-Democrat, was a key member of the Judiciary Committee and consistently a thorn for leaders of both political parties and their presidents. Specter died of complications from non-Hodgkins lymphoma at his home in Philadelphia on Sunday. He was 82.

At the 2012 Great American Beer Festival, 2,700 different beers were served up by some of the best breweries in the United States. For the event's 49,000 attendees, the festival is a chance to try new and unique beers; for the brewers, it's a way to make a name for themselves.

Catholic voters are an important constituency in the Buckeye State, representing about 26 percent of voters. But different issues bring out different Catholic voters, a theologian explains. Some voters stress the church's teaching on issues like abortion, while others focus on social justice.

As acne bacteria develop resistance to antibiotic treatments, doctors turn to zit-fighting viruses.

Since the Nobel Prizes were established in 1901, more than 860 people and organizations have been awarded a Nobel Prize. Yet, just 44 of those prizes have gone to women. Many experts say a history of discrimination in the sciences is likely the cause.

With his jump, Felix Baumgartner broke two records: One to do with altitude, the other with YouTube.

Experts say based upon the straight-line cuts around the eye, it's likely a fisherman removed it. Swordfish can weigh hundreds of pounds.