County-level nitrogen losses (IMAGE) University of Pittsburgh Caption County-level nitrogen losses from (a) production-based accounting and (b) consumption-based accounting. The weighted average distance between consumption and nitrogen losses during production is depicted in map (c). Credit Lab of Vikas Khanna Usage Restrictions Use allowed with proper attribution 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.