On the Ice (IMAGE) Columbia Climate School Caption Marco Tedesco (left) and a colleague measure reflectance on the Greenland ice sheet during a 2018 expedition. Credit Kevin Krajick/Earth Institute Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.