Patricio Grassini and Ken Cassman (IMAGE) University of Nebraska-Lincoln Caption Agronomists Patricio Grassini (left) and Ken Cassman are part of a team that developed the Global Yield Gap and Water Productivity Atlas through an international collaboration. Credit Craig Chandler/University Communications/University of Nebraska-Lincoln Usage Restrictions None License Licensed 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.