Clean / with Steven Johnson ; produced & directed by Nic Stacey ; a Nutopia Ldt., production for PBS in association with OPB and BBC.
Dirty water has killed more humans than all the wars of history combined, but in the last 150 years, a series of radical ideas, extraordinary innovations and unsung heroes have changed our world. Johnson plunges into a sewer to understand what made a maverick engineer decide to lift the city of Chic...
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