
Few places are drier than the Middle East and North Africa. Host to 5 percent of the world’s population, the region has only 1 percent of the world’s renewable fresh water.
Ras Jdir, Tunisia: I heard boisterous singing as I walked through the transit camp on the border between Tunes and Libya. There, forming a human chain to pass boxes of supplies into a tent, was a group of Tunisian youth, volunteering to assist the tens of thousands of migrants fleeing the conflict in Libya. They provided a welcome counterpoint to the blowing sand and steady flow of Bangladesh, Somalia, Malian and other migrants struggling across the border and into the transit camp.