The most surprising bit of this for me was nuclear winter. I thought the idea fell out of favor, but they cite a recent Nature paper claiming up to 99% of the population of the global North would starve. Do any governments stockpile food? Afaict, the US doesn't keep emergency stocks of non-perishables. Though according to the paper it would take ~8 years for food production to pick back up substantially, so that migh…
I don't think any government stockpiles enough food to keep a significant fraction of its population alive for nearly a decade. But in the US, on the Great Plains, there are all these towns with grain elevators. I'd guess that what's in that grain elevator could feed the population of the town (plus surrounding farms) for several years. (Yeah, I know, wheat or corn, by itself, doesn't have all the nutrients people ne…
I'd imagine almost everything, even perfectly stored would spoil by that timeframe.