CO2 Sounder Lidar Team (IMAGE) NASA/Goddard Space Flight Center Caption Mark Stephen (left) and Tony Yu are part of the team, including Jeffrey Chen (not pictured), who developed the advanced laser system used on the CO2 Sounder Lidar. Credit NASA's Goddard Space Flight Center/Bill Hrybyk 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.