Steel can use electricity for heat and hydrogen for reduction. There are some things where we don't know of good replacemets (e.g. concrete, aviation), but stee

Steel can use electricity for heat and hydrogen for reduction. There are some things where we don't know of good replacemets (e.g. concrete, aviation), but steel is not a good example. In any case, if we get rid of fossil fuels everywhere where it's easy (electricity, heating, mobility except for flying), then we have a lot larger budget for figuring out how to do the things where it's not easy.