Side note: most industrial fertilizer is produced from non-renewable minerals and natural gas [0]. If you want a truly sustainable food system, some amount of "

Side note: most industrial fertilizer is produced from non-renewable minerals and natural gas [0]. If you want a truly sustainable food system, some amount of "organic" a.k.a. plant and animal-based fertilizer is probably necessary. We know this works, because it's how all farmland was fertilized before the mining of niter and invention of the Haber-Bosch process. https://en.wikipedia.org/wiki/Fertilizer#Production https://en.wikipedia.org/wiki/Fertilizer#Production