https://techcrunch.com/2018/06/08/this-box-sucks-pure-water-out-of-dry-desert-air/

For many of us, clean, drinkable water comes right out the tap. But for billions it’s not that simple, and all over the world researchers are looking into ways to fix that. Today brings work from Berkeley, where a team is working on a water-harvesting apparatus that requires no power and can produce water even in the dry air of the desert. Hey, if a cactus can do it, why can’t we?

While there are numerous methods for collecting water from the air, many require power or parts that need to be replaced, what professor Omar Yaghi has developed needs neither.