The symptoms are here: multiyear droughts, large-scale crop failures, a major city—Cape Town—on the verge of going dry, increasing outbreaks of violence, fears of full-scale water wars. The big question: How do we keep the water flowing?

Attracted by lax regulations, industrial agriculture has descended on a remote valley, depleting its aquifer — leaving many residents with no water at all.

Bangalore was once the icon of a globalized, high tech, utopian future. Now it’s a sign of global catastrophe.

On the rapid disintegration of the ecosystem in Las Vegas.