Puddle Jumpers (IMAGE) Earth Institute at Columbia University Caption Increasing rainfall over the Greenland ice sheet is driving rapid melting of the surface. Here, researchers cross Greenland's Russell Glacier, July 2018. Credit Kevin Krajick/Earth Institute 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.