Testing facility (IMAGE) Optica Caption Researchers developed a technique called chemical species tomography that can capture carbon dioxide exhaust from a commercial airplane engine. To image such a large area, the researchers used a 7-m-diameter optical mounting frame (red) located just 3 m from the exit nozzle of the engine. The testing facility is at the Instituto Nacional de Tecnica Aeroespacial (INTA) in Madrid. Credit Gordon Humphries, University of Strathclyde Usage Restrictions None 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.