Digging Below the Ice (VIDEO) Columbia Climate School This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Lead author Joerg Schaefer explains how his team concluded that Greenland has melted in the past, and addresses the implications for potential modern sea-level rise. Credit Columbia University Usage Restrictions Credit must be given. 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.