Hundreds of thousands of refugees have fled the civil war in South Sudan and resettled in Uganda. This 12-minute documentary shows the daily struggle to get water.
An article in this week's New Yorker writes about youngsters who fell into a coma-like state in reaction to the news that their family may be deported. We interview the author.
Scientists expected a surge of severe birth defects in Brazil because of the Zika outbreak. But that didn't happen last year. Researchers are re-examining the link between Zika and birth defects.
The death of the 34-year-old Kansan was confirmed this week. Correspondent Gregory Warner met him by chance on a boat and found out how he managed to forge a dialogue with violent rebels.
They're so noisy that the Central Pollution Control Board is urging drivers not to honk needlessly — like that Uber driver who beeps along with the song on the radio.
The Zika virus may have infected more than 1 million people in Puerto Rico, including thousands of pregnant women. Doctors are watching babies born to infected moms who don't show birth defects.