Groundwater Extraction Causes Earth's Tilt and Pole Shift.

The overuse of groundwater has caused the North and South Poles to shift almost 80 centimeters in 17 years, affecting the Earth's rotation. Groundwater extraction has the largest impact on the drift of the rotational pole, according to a study that used data from the Gravity Recovery and Climate Experiment (GRACE). The study confirms estimates of how fast we're depleting a vital resource and validates concerns about the rate at which we're using up one of our most vital resources.