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Scientists say the discovery of more carbon than oxygen and no methane in the atmosphere of a gas giant favors one theory of solar system formation.

Harvesting stem cells from human fat may be an effective way to treat brain cancer, researchers report in the journal PLoS One. Alfredo Quinones-Hinojosa, of the Johns Hopkins School of Medicine, explains how fat cells can be used as Trojan horses to fight cancer.

Suffering a single concussion may cause lasting brain damage, researchers report in the journal Radiology. Steven Flanagan, co-director of the Concussion Center at NYU Langone Medical Center, discusses the findings, and why diagnosing a concussion is so difficult.

If signed into law by Gov. Martin O'Malley, which is expected, Maryland will become the 18th state to end capital punishment.

During match week, med students learn if, and where, they will go for a residency program. It's a nerve-wracking process, but it's supposed to give students an advantage – allowing them to have the same ability to rank their favorite programs as hospitals have to choose the best applicants.

Activists attending the CPAC convention were among those responding to Rob Portman on Friday after the Ohioan became the first Republican in the Senate to support gay marriage.

For years, the Big East conference has been an elite force in men's college basketball. That ends this weekend. Realignment has dramatically transformed the Big East, as major powerhouse teams are moving on to other conferences.

Major League Baseball's answer to Soccer's World Cup is the World Baseball Classic. In the U.S., the television ratings have been pretty awful. But there's been plenty of excitement and surprises nonetheless. Audie Cornish talks to sportswriter Stefan Fatsis.

Pope Francis' status as the first Jesuit marks a momentous milestone in history.

Audie Cornish talks with Political Tours director Nicholas Wood about the little-known tourism industry for those who want to visit North Korea.