Global Maize Yields (IMAGE) University of Minnesota Caption Detailed analysis of maize (corn) yields around the world show a disconcerting stagnation or collapse in many locations since the heyday of the Green Revolution. Credit Deepak Ray, Institute on the Environment. Usage Restrictions With proper credit 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.