Did you know the distribution of snow and rain and humidity actually causes the earth's geographic poles to shift? Mean either!! Cause that sounds crazy, picturing the earth as this wobbly ball that has to re-center itself occasionally. Now, thanks to climate change and Greenland melting, the poles have shifted at a much faster rate than before.

From 1982 to 2005, the pole drifted southeast toward northern Labrador, Canada, at a rate of about 2 milliarcseconds --or roughly 6 centimetres -- per year. But in 2005, the pole changed course and began galloping east toward Greenland at a rate of more than 7 milliarcseconds per year.

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They found that recent accelerated ice loss and associated sea-level rise accounted for more than 90% of the post-2005 polar shift.

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When mass is lost in one part of a spinning sphere, its spin axis will tilt directly toward the position of the loss, he says -- exactly as Chen's team observed for Greenland. "It's a unique indicator of the point where the mass is lost," says Ivins.

Guess Santa better start packing.