Greenland ice core photos

An international team of researchers including several from CU-Boulder who have been analyzing ice cores from the Greenland ice sheet going back in time more than 100,000 years believe the last interglacial period may be a road map of sorts regarding the future climate of Earth as temperatures and greenhouse gases like carbon dioxide continue to rise. The team drilled through more than 1.5 miles of ice to retrieve climate information locked in the cores, which were formed by annual layers of compressed snow and which show the Eemian interglacial period was significantly warmer than today.