People have a long history of trying to control water, like when the Roman emperor Plumpus Crackus built the Cloaca Maxima (only one of those names is made up) to transfer sewage into the Tiber River. From irrigating fields to building canals to damming waterways to bringing water into our buildings, we've engineered more and more complex ways to tame water. And in so doing, we've changed the environment, both aquatic and terrestrial, and we've changed the course of human history. What we do with water matters even more in the era of global warming. Can we learn to treat this most precious of resources in a way that achieves sustainability? Beware of severe pun overshoot in this episode.

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