Greenhouse Gas Measuring Boxes (image) University of Arizona Caption The team installed equipment to measure the production of greenhouse gases by soil microbes. These Plexiglas hoods lower themselves onto the ground for specified periods of time to analyze gases emanating from the soil. Credit Scott Saleska Usage Restrictions This visual may only be used in conjunction with reporting/posting of this news release. Image/video credit must be included exactly as indicated. 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.