Observation Flight and Tower (2 of 2) (image) Harvard University Caption A Cessna plane, making continuous observations of carbon dioxide, flies over an Atmospheric Radiation Measurement tower used by the Department of Energy to collect air samples near the town of Lamont, Oklahoma. Credit Photo by Roy Kaltschmidt, Lawrence Berkeley National Laboratory. Usage Restrictions None 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.