Video: A catastrophic TWO METRE rise in sea levels - threatening some of the world`s major cities

The warning comes following a new study looking at the future of the massive Totten Glacier which drains one of the world's largest areas of ice, on the East Antarctic Ice Sheet (EAIS).

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. Researchers say that would cause it to withdraw up to 300 kilometres (186 miles) inland in the following centuries and release vast quantities of water, contributing up to 2.9 metres to global sea-level rise.