The world’s first 100% hydrogen passenger trains are now running in Germany
![The world’s first 100% hydrogen passenger trains are now running in Germany](https://images.fastcompany.net/image/upload/w_1280,q_auto,f_auto,fl_lossy/wp-cms/uploads/2022/09/poster-coradia.jpg)
While diesel trains spew pollution, these all-hydrogen ones emit only water vapor.
Sitting inside a diesel train, you can be exposed to more pollution than if you were standing next to a busy street at rush hour. The trains are still common—especially in the U.S. But in Germany, one small train line that used to run on diesel is moving to 100% hydrogen.