CoInLab (IMAGE) West Virginia University Caption WVU students Joanna Ridgeway and Dominick Cifelli measure carbon dioxide respiration from soil incubations to get an indicator of microbial activity. Credit WVU Photo 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.