Part of the Greenland Ice Sheet completely melted about 7,000 years ago at temperatures close to those predicted for the end of this century, and it could have big implications for future sea-level rises, according to a new study.
The Prudhoe Dome, now a 1,640-foot (500-meter) thick ice cap covering 965 square miles (2,500 square kilometers) of northwestern Greenland, melted under the warmer temperatures of the early Holocene, exposing the sediment beneath.
