Stephen Klippenstein, DOE/Argonne National Laboratory (image) DOE/Argonne National Laboratory Share Print E-Mail Caption Nitrogen oxides are significant pollutants to the atmosphere. Argonne chemist Stephen Klippenstein co-authored a new review paper that compiled decades of data to create a model of how these pollutants are produced. Credit Argonne National Laboratory Usage Restrictions None Share Print E-Mail 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.