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Penn Engineers Discover a New Class of Materials That Passively Harvest Water from Air
(blog.seas.upenn.edu)
This is a most excellent place for technology news and articles.
People were able to (and at some places did) cut down every tree WELL before they had power tools and even saws. Just with axes. The comparison is laughable.
No, massive air moving structures can not be cheap. Neither building nor operating them.