Nature Climate ChangeThe window to avoid locking in decades of steel emissions is closing fastClara BachorzJakob DürrwächterChen Chris GongAdrian OdenwellerMichaja PehlFelix SchreyerPhilipp C. VerpoortGunnar LudererFalko Ueckerdt2026-05-21Full textDOI https://doi.org/10.1038/s41558-026-02634-9