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MIT’s New Desalination System Produces Freshwater That Is “Cheaper Than Tap Water”
(scitechdaily.com)
this post was submitted on 06 Oct 2023
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With desalination, don't worry about the freshwater. Worry about the brine.
Freshwater from seawater isn't going to do anything more than is currently happening with however an island gets its water.
But brine? That needs to be carefully reintroduced to the ocean (or evaporated on salt flats to farm salt).