drinking water out of thin air

It may seem obvious, but there is a lot of water vapor in the air, and until this point it was only theoretically possible to collect it in a simple and cost effective way. 

But now, a group of engineers have developed a graphene-calcium composite that can absorb clean water from the atmosphere, which can be consumed. 

And the great part is that it is cheap and reusable. Meaning that many more people could have access to clean water. 

New nanomaterial pulls drinking water straight out of thin air


https://interestingengineering.com/innovation/water-from-air-graphene-calcium-aerogel