Schild (IMAGE) University of Maine Caption Kristin Schild getting back in the helicopter after deploying a GPS tracker on the surface of one of the icebergs in 2019. Credit Mark Carey Usage Restrictions Free to publish content with proper attribution. License Original 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.