Rampant removal of groundwater for drinking and irrigation has altered the distribution of water on Earth enough to shift the planet’s tilt, according to a sweeping new study. The finding underscores the dramatic impact that human activity can have on the planet. Humans pump most of our drinking water from natural underground reservoirs called aquifers. Researchers calculate that between 1993 and 2010, we removed a total of 2,150 gigatons of groundwater — enough to fill 860 million Olympic swimming pools. According to the new study, published on June 15 in the journal Geophysical Research Letters, moving all that water has shifted Earth’s tilt 31.5 inches eastward.  Full article from Washington Post.