The rapid melting of one the largest glaciers on earth, the Totten Glacier in East Antarctica, could raise global sea level at least 2 meters by the end of the century, according to a new study Scientists say the huge glacier is even more vulnerable than they previously thought and that research indicates that the process may be unstoppable. Imperial College London reports: By studying the history of Totten’s advances and retreats, researchers have discovered that if climate change continues unabated, the glacier could cross a critical threshold within the next century, entering an irreversible period of very rapid retreat. This would cause it to withdraw up to 300 kilometres inland in the following centuries and release vast quantities of water, contributing up to 2.9 metres to global sea-level rise. The EAIS is currently thought to be relatively stable in the face of global warming compared with the much smaller ice sheet in West Antarctica, but Totten Glacier is bucking the trend by losing substantial amounts of ice. The new research reveals that Totten Glacier may be even more vulnerable than previously thought. The study, by scientists from Imperial College London and institutions in Australia, the US, and New Zealand [...]