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The tropical virus has killed a man who returned to New Jersey from Liberia this month. But chances that he could have spread the disease are remote.

The problem has gotten so bad that some doctors are pondering a "post-antibiotic world." The World Health Organization says countries need to boost surveillance for resistance and develop new drugs.

After becoming homeless and jobless following her transition to being a woman, Ruby Corado got her act together, and now helps others facing similar challenges. "We have a family here," she says.

For the first time in a White House race, the candidates will need a game plan for cyber policy for Day 1 in the Oval Office and will have some tough choices to make.

College Unbound aims to provide students who have some college experience a personalized path to a degree.

It seemed to make sense that the childhood Hib vaccine could cut leukemia risk by keeping the immune system in check. But proving there's cause and effect at work turns out to be a challenge.