The Dutch government informed Dutch industry in January this year that by 2022, it should quit consuming natural gas. Students from Eindhoven University of Technology are working on a sustainable solution to replace industrial fossil fuel consumption: burning iron. This fuel generates no CO2 emissions, and the residual product, rust, can be fully recycled. The iron powder flames produce high temperatures, which is important for many industries. The student team, Team SOLID, has built a proof-of-concept installation that generates both heat and electricity.