Haber-Bosch does not take hydrocarbons as an input but hydrogen. Methane currently just is a convenient cheap source of that. It will be difficult but there’s

Haber-Bosch does not take hydrocarbons as an input but hydrogen. Methane currently just is a convenient cheap source of that. It will be difficult but there’s nothing fundamental that prevents us from making concrete, steel tractors and trucks without fossil fuels.