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A mysterious set of medical complications plagues some survivors: joint pain, vision loss, rashes. Doctors aren't sure why it's all happening. But they have a name for it: post-Ebola syndrome.

In New York on Friday, Iran and six world powers sat down for the latest talks aimed at limiting Iran's nuclear program in exchange for sanctions relief.

Fighting has intensified near two major cities held by pro-Russian separatists in eastern Ukraine. In Berlin, a meeting on a cease-fire ended without any breakthrough.

The death of Brazil's Socialist Party presidential candidate created an opportunity for his running mate, Marina Silva. Her entry into the race has upended the situation. Whereas the man she replaced was running a distant third in polls, support for Silva has surged.

Many Star Trek gadgets have made the journey from science fiction to real life. Arun Rath talks to Grant Campany about the X Prize Foundation's competition to bring the medical tricorder to life.

U.S. airstrikes in Somalia this week targeted leaders of the al-Shabaab Islamist militant group. The group has claimed responsibility for many bombings in Somalia, as well as the 2013 attack on neighboring Kenya's Westgate mall. What could the death of al-Shabaab's leader mean for the group?

Voting might not be the sexiest thing in the world, but at least one ad campaign encouraging Americans to register is pretty provocative.

Despite President Obama's assertion that the combat mission in Afghanistan would be over by the end of 2014, the new agreement means that 10,000 U.S. troops will still be in harm's way.

The 150-city protest for a minimum wage hike comes at a time when other changes are putting more pressure on businesses to pay their workers more. Home health care workers joining the fight also raises the issue of overtime rules, which are expected out from the Labor Department in November.

At 4:30 a.m., medical student Ryan Klitgaard would wake up to a Nicaraguan newspaper vendor yelling through a megaphone. Then came a day of treating patients — and fending off dogs and chickens.