This is WEEKEND EDITION from NPR News. I'm Lynn Neary. President Obama is in Johannesburg, South Africa this morning. It's his second stop on a three-country tour of Africa. NPR's Ari Shapiro is traveling with the president. He joins us now. Good morning, Ari.
ARI SHAPIRO, BYLINE: Good morning, Lynn.
NEARY: The president held a press conference with the current South African president Jacob Zuma this morning. Tell us about that.
The death toll in Syria's ongoing civil war may now be as high as 100,000. As the violence mounts, another emergency is looming: a public health crisis across the region.
That's the conclusion of a new study published by the British medical journal The Lancet. Syria's health care system is near collapse. Outbreaks of disease are on the rise in the country, and refugees sheltered beyond the border are also at great risk.