Bottom line: the Earth is running out of water.
Two new NASA studies led by researchers from the University of California Irvine and published Tuesday show that the depletion of global groundwater resources, due to the dueling impacts of global warming and growing human demand, has caused the world’s water supply to drop to dangerous levels.
The first report compares statistical analysis of water withdrawal to GRACE satellite analysis, which measures variations in gravity on the Earth’s surface, between January 2003 and December 2013. The study compares the difference between the use and availability of these resources to determine the amount of overall renewable groundwater stress, or RGS.
According to the findings, at 21 of the 37 largest aquifers, water is being drained at a greater rate than it is being naturally replenished, 13 of which fell into the most troubled category.… Read the rest