Chemtrails vs. Contrails (Video) (IMAGE) American Chemical Society Caption It's easy to look at the white trail behind a jet aircraft and imagine all manner of chemicals raining down from above. However, airplane contrails are simply what happens when jet engines burn fuel. In this video, Reactions explains the straightforward chemistry of contrails: https://youtu.be/ZonPvpgcBc0. Credit The American Chemical Society 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.