Ammonia-making process (IMAGE) Cell Press Caption Researchers cooked up a new recipe—without any energy input or CO2 emission—for generating ammonia, a key chemical for the agriculture industry, by mixing nitrogen-laced water with iron-rich rocks. Credit Yifan Gao and Iwnetim Abate Usage Restrictions Credit must be given to the creator. Adaptations must be shared under the same terms. License CC BY-SA 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.