Three scenarios collude toward disaster. Scenario one: The world is running out of freshwater. It is not just a question of finding the money to hook up the 2 billion people living in water-stressed regions of our world. Humanity is polluting, diverting, and depleting the Earth's finite water resources at a dangerous and steadily increasing rate. The abuse and displacement of water is the ground-level equivalent of greenhouse-gas emissions and likely as great a cause of climate change.