Global warming boosting Greenland glacier flow

LONDON (Reuters) - Two major glaciers in Greenland have recently begun to flow and break up more quickly under the onslaught of global warming, a new study said on Friday, raising the specter of millions drowning from rising sea levels.

The report from the University of Swansea's School of the Environment and Society said the Kangerdlugssuaq and Helheim glaciers had doubled their rate of flow to the ocean over the past two years after steady movement during the 1990s.
This spurt meant that current environmental models of the rate of retreat of Greenland's giant ice sheet -- which could add seven meters to the height of the world's oceans if it disappears -- had underestimated the problem.