SANTA CRUZ, CA--Satellite images show that, after decades of stability, a major glacier draining the Greenland ice sheet has dramatically increased its speed and retreated nearly five miles in recent years. These changes could contribute to rapid melting of the Greenland ice sheet and cause the global sea level to rise faster than expected, according to researchers studying the glacier......................"If other glaciers in Greenland are responding like Helheim, it could easily cut in half the time it will take to destroy the Greenland ice sheet," Howat said. "This is a process we thought was only happening in Antarctica, and now we're seeing that it happens really fast in Greenland".....................................
http://www.eurekalert.org/pub_releases/2005-11/uoc--rag111405.php.................................