Umberto BacchiAFP·2 Jun, 2026 03:21 AM4 mins to readHydrogen and CO2 are turned into jet fuel at a plant near Frankfurt, Germany. Photo / Getty ImagesHydrogen and CO2 are turned into jet fuel at a plant near Frankfurt, Germany. Photo / Getty ImagesAt a plant near Frankfurt, in Germany, hydrogen and CO2 sourced from a chlorine factory and a biogas facility nearby are piped into a reactor and – after a few more steps – turned into jet fuel.

Interest in such synthetic propellants is growing as the Iran war pushes Europe