Greenhouse gas measurements (IMAGE) Purdue University Caption From left, Purdue’s Bryan Overstreet; Yichao Rui; Annie Benson, master’s degree student in agronomy; and Binod Joshi, PhD student in agronomy, conduct greenhouse gas measurements. (Credit: Purdue Agricultural Communications/Steve Doyle) Credit Credit: Purdue Agricultural Communications/Steve Doyle Usage Restrictions News organizations may use this image in reports about the work of Purdue University’s Yichao Rui, Ashley Adair and their colleagues. 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.