How Cities Work

Water Works

TV-G
S1 • E5    Dec 15, 2013
For centuries cities have been built near a fresh water supply. Without it we’d be lucky to live three days. But this most basic human need can be deadly too—get the supply wrong and it can poison us, get too close and it can drown us. And with every passing year the challenge of providing water to billions of people becomes harder and harder.

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