The Pine Island Glacier and the ice shelf in front of it have been under scientific study for years. If the ice shelf disappears, the ice masses behind it will flow unchecked into the Southern Ocean. This is likely to raise sea levels by up to half a meter. Photo:...
The satellite image shows the Pine Island glacier in 2011, when a 30-kilometer-long crack formed and led to the calving of a 720-square-kilometer iceberg. The glacier itself is about 250 kilometers long and its catchment area is about 10 percent of the West Antarctic...