Nitrogen Forced to React (IMAGE) University of Würzburg Caption For the first time, two molecules of atmospheric nitrogen (blue, middle) are coupled directly to each other in research by chemists from Würzburg and Frankfurt. Credit (Picture: Dr. Rian Dewhurst / Dr. Marc-André Légaré) 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.