Mud and Ice (IMAGE) Columbia Climate School Caption Ancient sediments recovered off the coast of East Antarctica suggest that the ice sheet repeatedly melted back 3 to 5 million years ago, contributing to sea level rise. Credit Cathy Stickley 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.