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‘It was an accident’: the scientists who have turned humid air into renewable power
(www.theguardian.com)
This is a most excellent place for technology news and articles.
It doesn’t say how humid the air needs to be. Will it still work if humidity is low?
There's always some humidity, so I guess in the end it depends entirely on how efficient they can make this technology. It's probably a bit too early to say.
That said, if you live in a tent in the Sahara you probably shouldn't postpone investing in solar panels over this.