Ammonia (IMAGE) Texas A&M University Caption Dr. Abdoulaye Djire (left) and Denis Johnson (right) analyze a coloring solution after an experimental run. A coloring solution is created after each nitrogen reduction reaction experiment, and the level of ammonia produced is indicated by how green the solution turns after a waiting period. Credit Texas A&M College of Engineering Usage Restrictions none 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.