Sooner or later energy prices will increase and fertilizer will get more expensive. Step functions and impulses are useful ways to probe the inner working of a system and in this case helped to highlight the dominant role energy plays everywhere. We re-learned what we forgot or ignored since the last energy aka. oil price shock in the '70. In the long run the situation for food security is challenging unless we switch to a different paradigm of farming and population control.
This is such a weird comment. For much of the world, food security is an ever present problem that is heavily affected by energy prices (among other things). Fertilizer prices are already up significantly. This isn't something we have to wait for. It's already been happening for the past decade and it's going to keep getting worse.
You're fortunate that you live in a country where food security on a population level isn't a constantly relevant concern.
energy prices are decreasing, not increasing; solar power is half as expensive as coal power in most of the world already, and it's likely to get even cheaper over time as pv production scales up
(of course in northern europe this year that is not the case because they were relying on russian gas, but that's not 'sooner or later', that's just right now)
