Social Costs of Nitrogen Pollution (IMAGE) University of Minnesota Caption To adequately account for the cost of nitrogen pollution, researchers from the University of Minnesota Institute on the Environment have proposed a framework that accounts for all of the damages that occur when reactive nitrogen enters our air or water. Credit Institute on the Environment, University of Minnesota Usage Restrictions With 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.