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MIT’s New Desalination System Produces Freshwater That Is “Cheaper Than Tap Water”
(scitechdaily.com)
Technology for a Solar-Punk future.
Airships and hydroponic farms...
The point is, this is a solution to a problem now and probably in the near future. 100% of the world won't be desalination. This is literal drops in the bucket compared to other resources we take from the earth that are impossible to replenish.