21 of the world’s 37 biggest sources of drinking water are on the verge of disappearing

The world is running out of water.
New NASA satellite data shows that a majority of the world's largest underground aquifers — the predominant source of our drinking water — are being depleted faster than they can be refilled.
From its recent 2003 to 2013 study, NASA concluded that 21 of the 37 largest aquifers (underground reservoirs that store groundwater from rain and snow) are running out too fast to be replenished.
An additional 13 are declining at a rate that puts them in a category NASA calls the "most troubled."

Read more: http://www.businessinsider.com/nasa-data-shows-the-world-is-running-out-of-water-2015-6#ixzz3ddP154dG