The World's Aquifers Are Disappearing

Here is some bad news for the thirsty crowd - 21 of the world’s 37 biggest sources of drinking water are on the verge of disappearing:

http://www.businessinsider.com/nasa-data-shows-the-world-is-running-out-of-water-2015-6#ixzz3dVfr1lpn

Water wars, anyone ???