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Astronomers didn't think such well-formed spiral galaxies existed early on in the universe.

After Timothy Ray Brown became the first person to be cured of HIV, scientists became more optimistic that they could find other ways to cure patients. Two of the most promising possibilities include a vaccine and gene therapy that would re-engineer the immune system.

Burro racing began in the 1940s as the offspring of another Colorado industry: tourism. It has fewer participants than almost any other sport out there. On Sunday, the world champion of pack burro racing will be crowned in Fairplay, Colo.

Drought conditions in the Midwest are drying up the Arkansas River basin. Shrinking water levels are ravaging crops, sapping tourism and threatening drinking water supplies in the Rocky Mountains.

A study of more than 700 men with prostate cancer found no difference in rates of death among men who had their prostates surgically removed compared to those who didn't. The findings suggest that men with low-risk cancers could forgo surgery.

It's been reported that the CEO and his management team stand to make millions if they stall the merger long enough.

As the guessing game continues about Mitt Romney's choice of a vice presidential running mate, Ohio Sen. Rob Portman invariably comes up as a top contender. With a wealth of experience in Washington and beyond, the well-liked Portman would be considered a safe pick.

Body-stealing cases like that of Michael Mastromarino illustrate how an industry built on altruism can fall into the hands of the greedy.

"There is a crisis in the heart of the regime" after the deaths of three insiders and as clashes near the presidential palace, Washington Post correspondent Liz Sly tells Morning Edition.

Surveillance cameras in Burgas, Bulgaria, captured images of a young man who was walking around the airport. He reportedly then boarded a bus full of Israeli tourists and detonated an explosive. The attacker and six other people were killed.