Scientists have figured out ...

Scientists have figured out a way to harvest water from dry desert air using only the sun's heat. The device could be a game-changer for the approximately 2.1 billion people around the world who lack immediate access to clean drinking water. 

The device is made of a porous material called a metal-organic framework (MOF) that's housed within a clear plastic box. In simple terms, water vapor from the atmosphere condenses on the MOF material, which absorbs it like a sponge. As the water evaporates, it gets trapped and collected by the device. 

However, this may not be a good idea as a certain amount of humidity is desirable in the atmosphere.  If you look at the water cycle, you will notice that the water that evaporates into air returns as rain.   This is one of the scarcest commodities in the world today and who knows we may have to pay heavily for a bottle of even drinking water in the days to come.