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"If I had to get a new Ph.D. now, I'd get it in polymer engineering - the manipulation of matter."
- Bart Kosko

Clearsac  
  A simple device that filters water perfectly for reuse.  

Americans in the Southwest have been emptying aquifers that took thousands of years to fill in mere decades. What will they do for water when the drought years come?

A guy off to the side of the parking lot was pissing into a Clearsac. He finished and held it up over his mouth, sucking as he squeezed; looking like the happiest man alive. People started out squeamish about Clearsacs, but eventually even the fussiest were grateful for them.
From The Water Knife, by Paolo Bacigalupi.
Published by Knopf in 2015
Additional resources -

Compare to plastibulbs from The Proud Robot (1943) by Lewis Padgett and drinking bulb from Larry Niven's 1966 short story The Warriors (although most readers probably remember it from his 1971 novel Ringworld).

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Additional resources:
  More Ideas and Technology from The Water Knife
  More Ideas and Technology by Paolo Bacigalupi
  Tech news articles related to The Water Knife
  Tech news articles related to works by Paolo Bacigalupi

Clearsac-related news articles:
  - Nanotech Used To Create Custom Water Filters In Tanzania

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