Stephen Decina, Boston University (image) Boston University Share Print E-Mail Caption Stephen Decina, Boston University PhD student, measures carbon dioxide being released from the soil using an automated soil carbon dioxide efflux system. The equipment, which is controlled with a smartphone, passes air through an infrared gas analyzer and measures the concentration of carbon dioxide accumulation over time. Credit Stephen Decina Usage Restrictions None Share Print E-Mail 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.