Alaska's enormous Hubbard Glacier is expanding at an incredible rate of 7 feet per day! This expansion actually is a threat to salmon runs in Disenchantment Bay. The USGS notes that this expansion is in contradiction to other glaciers in the world that are retreating. The USGS uses the Hubbard Glacier expansion as an example of "the calving glacial cycle in which glacier advance and retreat is more controlled by the mechanics of terminus calving than by climate fluctuations." USGS - Hubbard Glacier, Alaska Alaska's Hubbard Glacier is advancing at the rate of seven feet per day!