Tens of millions of Chinese now identify as Christians, and the number has grown rapidly, posing challenges for a government that is officially atheist and wary of threats to its power.

The Zika virus, which has been found to cause severe birth defects, has spread across the Americas, prompting the World Health Organization to declare a global health emergency.

Hundreds of thousands of Rohingya, a Muslim ethnic minority group, have fled persecution in Myanmar’s Rakhine State, fueling a historic migration crisis.