The advance of agriculture allowed great advances in civilization. Now agriculture is bad.
There’s not enough agriculture. As they destroy the beautiful, fertile farm land of Ukraine, and make chemical fertilizers harder to get, there will be price hikes in essentials everywhere, and famine in the third world, and that famine will widen until it effects everyone. People need to plow up their lawns and start planting. Crappy days are here again.
Java is a tiny chain of volcanic islands, and they have an equivalent population to that of Russia, mainly because they grow rice on the slopes of those volcanos.