Andy WatT, NCAR (IMAGE) U.S. National Science Foundation Caption The HIPPO's air-sampling flasks are tended by NCAR scientist Andy Watt. Credit Carlye Calvin, UCAR 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.