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A robotic cargo ship owned by SpaceX, a private company, is ferrying supplies to the space station. NASA is turning over routine flights to the commercial sector so that it can focus on other missions.

The disconnect between our social calendars and our biological clocks is creating "social jet lag," according to key researchers. And that's taking a toll on our weight because the body stores fat when it's not getting enough sleep.

Aly Raisman started gymnastics like millions of other kids — in a toddler tumbling class. Now 17, the Massachusetts athlete is considered one of the best tumblers in the world. And she's on track to make the 2012 U.S. Olympic gymnastics team.

Over the past decade or so, sigmoidoscopy has been largely abandoned by doctors in the U.S. in favor of colonoscopy to detect and prevent colon cancer. But sigmoidoscopy is easier on patients and is also effective in finding precancerous polyps.

A recession and its lingering effects have made it even harder for teens to find summer employment. But the drop off in teen summer hiring predates the recession.

Pollsters often ask: "If the election were held today, who would you vote for?" The fundamental problem is that the election is not being held today. But while a lot will change between now and November, strategists say campaigns use early polling to help shape a winning message.

The U.S. is ending millions of dollars in funding for Pakistan's version of Sesame Street, which began airing six months ago. Officials say allegations of fraud by the Pakistani company that's producing the TV show prompted the decision, which comes amid a tense period in U.S.-Pakistan relations.

Greek businesses and individuals have been steadily withdrawing euros, which has weakened Greek banks. This trend could be hard to reverse because Greeks fear a departure from the eurozone and a return to the drachma would wipe out much of their savings.

When a parent returns from deployment, fitting back into the family can be struggle. National Guardsman Kevin Ross says, after coming home from Iraq, he talked to his three kids like they were soldiers. But with the help of a new study, he's learned to change his approach — and it's made a big difference.

Under an agreement three years ago, Zimbabwe's government was supposed to start easing its grip on the media. But that hasn't happened, and Zimbabweans often resort to listening to foreign broadcasts.