Jakobshavn Isbræ in west Greenland, a major outlet glacier of the Greenland Ice Sheet, was the fastest moving glacier in the world over the past half century. It had been moving continuously at speeds of over per day with a stable terminus since at least 1950. In 2002 the long floating terminus of the glacier entered a phase of rapid retreat, with the ice front breaking up and the floating terminus disintegrating and accelerating to a retreat rate of over per day. No longer. The glacier has "slammed the breaks" and is now getting thicker (growing in height) 20 meters each year.