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Researchers conclude that spiral CT, which makes 3-D pictures of lungs, could reduce lung cancer deaths by 35 percent at a cost of $19,000 to $26,000 per year of life saved. The findings apply to people at high risk for developing lung cancer.

Monday was the first time GOP presidential candidate Mitt Romney and Florida Sen. Marco Rubio, often talked about as a vice presidential pick, have campaigned together. But Romney said the process of choosing his running mate has barely gotten started.

Even though the number of Muslim students pursuing higher education is growing, very few colleges have Muslim chaplains. This semester, the University of Michigan became the first public school with a Muslim chaplaincy, but the position is privately funded to maintain a separation of church and state.

Former Vice President Dick Cheney has undergone a heart transplant in a hospital near Washington. Cheney, 71, was on the waiting list for a heart for 20 months, which is longer than the average wait time in the Washington area. His prognosis remains uncertain.

The former vice president is recovering from a heart transplant he received over the weekend. Experts say it's unusual for a 71-year-old to get a transplant, but more and more older people are getting them as the procedures improve and the population ages.

This week Mitt Romney and Rick Santorum got their Secret Service code names: Romney is "Javelin," Santorum is "Petrus." Presidents have been getting code names back to Harry Truman, who was called "General." Ian Chillag and Mike Danforth of the podcast How To Do Everything look into how these code names are assigned.

The school has one of the most lucrative football programs in the country. But now, with a child sex abuse scandal coming to light, some are questioning the program's influence on campus.

For the past week, New York Police and the FBI have been at odds over a terrorism case which involves an American of Dominican descent named Jose Pimentel. New York police say he was an al-Qaida sympathizer planning to bomb targets in the city. The FBI declined to get involved with the case because it didn't see him as threat. Law enforcement officials on both sides have been airing the dispute over the case publicly, and that could help Pimentel build a defense.

The dismal economy has taken a toll on nonprofits. Donations are down. One nonprofit, Free Arts of Arizona, which uses art as therapy for the children of abused women, has had to make layoffs and budget cuts.

When Ben Rasmussen started making chocolate as a hobby, he had trouble finding equipment, so he cobbled together his own. Now Potomac Chocolate is a business run out of his utility room, where he makes award-winning, single-origin chocolate bars.