A natural history of rain, told through a lyrical blend of science, cultural history, and human drama. Rain is the subject of countless poems and paintings; the top of the weather report; the source of all the world's water. Barnett's "Rain" begins four billion years ago with the torrents that filled the oceans, and builds to the storms of climate change. It weaves together science the true shape of a raindrop, the mysteries of coloured rains with the human story of our attempts to control rain, from ancient rain dances to the 2,203 miles of levees that attempt to straitjacket the Mississippi River. Now, after thousands of years spent praying for rain or worshiping it; burning witches at the stake to stop rain; mocking rain with irrigated agriculture and cities built in floodplains; even trying to blast rain out of the sky with mortars meant for war, humanity has finally managed to change the rain. Only not in ways we intended. As climate change upends rainfall patterns and unleashes increasingly severe storms and drought, Barnett shows rain to be a unifying force in a fractured world.