“From 1993 to 2010, they determined, humans redistributed enough water to move the rotational pole roughly 31 inches.”
Humans pumped more than 2 trillion tons of groundwater between 1993 and 2010. It went to cities and farms, then ran out to the sea and raised sea levels by about a quarter of an inch. The shift moved Earth’s rotational pole by about 31 inches. Farmers draining aquifers now show up in planetary geophysics.