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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.
Isorhermal (unpowered) water condensation from capillary action isn't the interesting part, (and the article title doesn't really make that clear), but the potential ease of water extraction after condensation is interesting - and the original paper makes it clear in the discussion that that part isn't done yet and isn't guaranteed