Side note: If worrying about climate isn’t enough, we can also worry about potential famine as we use up our fossil fuels.

We are able to feed the world because of the Haber-Bosch process. This process uses fossil fuels, usually natural gas, to produce synthetic ammonia for fertilizer. That fertilizer makes modern high-yield farming possible. “Without the Haber-Bosch process we would only be able to produce around two-thirds the amount of food we do today.”
https://www.thechemicalengineer.com/features/cewctw-fritz-haber-and-carl-bosch-feed-the-world/