Kiev and Moscow confirm that the convoy, which crossed the border into rebel-held territory on Friday without permission, is exiting Ukrainian territory.
Journalist James Foley was killed this week by the Islamic State. Will airstrikes be enough to hold back the militants? CNN's Peter Bergen talks with NPR's Scott Simon.
In the wake of the protests in Ferguson, law enforcement officials around the country are trying to figure out how to lay the groundwork for peaceful collaborations between police and citizens.
Nearly 1,500 people have died in the Ebola outbreak, and more nations in the region are closing their borders. NPR's Scott Simon speaks to Africa correspondent Ofeibea Quist-Arcton about the epidemic.
Biologists have discovered what may be the largest unexplored ecosystem on earth, and it's all hidden under the Antarctic ice sheet. NPR's Scott Simon talks to the lead scientist, Brent Christner.
Dr. Gabriel Fitzpatrick has been treating Ebola patients in Sierra Leone with Doctors Without Borders. He spoke with NPR's Scott Simon about what the news of two cured Americans means for his efforts.
Ebola-stricken West Point is typically described as a slum in Liberia's capital city. That is true. But it is also a place of natural beauty and strong spirits.