Niwot Ridge (IMAGE) University of Colorado at Boulder Caption Former CU-Boulder postdoctoral researchers Amy Miller ( blue coat) and Katie Suding (black coat) are shown here with other members of a research team conducting a study involving nitrogen deposition on the tundra of the Niwot Ridge Long-Term Ecological Research site west of Boulder. Credit William Bowman, University of Colorado 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.