Riccardo Petrolo (IMAGE) Rice University Caption Postdoctoral researcher Riccardo Petrolo adjusts a gas-sensing drone in a Rice University laboratory. Rice researchers, with National Science Foundation backing, are developing a system that will autonomously sense atmospheric conditions and warn neighborhoods when pollutants are present. Credit Jeff Fitlow/Rice University Usage Restrictions For news reporting purposes only. 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.