alt Hacker NewsAlways worth noting that the fertilizers don't require fossil fuels, just currently use them as they are cheaper if you ignore the externalities and alternatives haven't got the scale yet.
Pro-fossil fuel types will regularly claim fossil fuels are a hard requirement for fertilizer.
I have often read the Haber-Bosch process credited with making the population explosion and drastic decreases in hunger possible, making it one of the most impactful discoveries in human history.