Groundwater depletion causing Earth's tilt to shift, study finds.

Human activities, particularly groundwater depletion, have caused a significant eastward shift of 31 inches in Earth's rotational pole between 1993 and 2010, according to new research. The study estimates that pumping 2,150 gigatons of water from underground aquifers caused the shift, which is the largest impact on the drift of the rotational pole among climate-related causes. The extracted groundwater that ended up in the oceans may have also boosted global sea level rise by around 0.25 inch.