We have disrupted the natural water cycle for centuries in an effort to control water for our own prosperity. Sandra Postel travels the world to explore water projects that work with, rather than against, nature’s rhythms — from forest rehabilitation safeguarding drinking water to farmers planting cover crops to reduce polluted runoff and "sponge cities" in China capturing rainwater. Replenish argues for repairing and replenishing the water cycle as an essential, practical response to climate change.