Apologies. I was being unforgivably imprecise. I should have used the phrase "fossil fuel(s)" instead of the word oil. > ...natural gas is used to power the pr

Apologies. I was being unforgivably imprecise. I should have used the phrase "fossil fuel(s)" instead of the word oil. > ...natural gas is used to power the process and as an intermediate in ammonia production, but it's not intrinsic to the process. Maybe I'm misreading the Forbes [0] article, but it says: > We take methane (the majority part of natural gas) and use the CH4 to fix the nitrogen (N) from the air to make ammonia (NH3) which is then the precursor for the various fertilisers themselves like ammonium nitrate (NH4NO3) say. That sounds to me like natural gas is -currently- a vital part of the production process, as well as a power generation fuel. That's -naturally- not to say that a different methane source couldn't be used. [0] Unrelated: Forbes links are always fun. The first time I load an article, I am taken to a "welcome" page whose URL is not the article I intended to load. My back stack is also destroyed, so the back button doesn't work. If I visit the intended URL a second time, I get to read what it was that I wanted to read in the first place. Yaay.