A Greenland glacier melted in 2012, causing a wave of ice and water to push seaward and warping the Earth's crust, according to a study published in Geophysical Research Letters. The wave is a new phenomenon for climate researchers and suggests that current sea-level rise estimates may be underestimated. The Rink Glacier lost more than 50% of its ice due to the wave, which proves that when ice goes down to the bottom of the ice sheet, it doesn't just refreeze, but moves the whole system faster.