NASA Says Humans <br />Are Making the <br />Earth Wobble More Earth has a natural wobble as it spins on its axis <br />that was previously thought to be entirely <br />caused by glacial rebound. New research by NASA has found that three factors equally come into play: glacial rebound, mantle convection and melting of ice. Glacial rebound is the process of Earth <br />regaining its original shape as the glaciers melt. Mantle convection is Melting of ice is where humans <br />are making their impact. As we continue to release greenhouse <br />gases and artificially warm the planet,<br />ice on land is melting at an alarming rate. Greenland, in particular, is estimated <br />by NASA to have lost 7,500 gigatons of <br />ice into the ocean in the 20th centurty. The transfer of such weight across the globe (equivalent to 20 million Empire State Buildings) <br />is causing the earth to wobble more <br />than it normally would have. We will continue to see <br />an increased wobble
