The threat of nuclear weapons is massively overblown (pun intended) thanks to a bunch of Cold War fearmongering. The Earth land surface area is 149 million sq

The threat of nuclear weapons is massively overblown (pun intended) thanks to a bunch of Cold War fearmongering. The Earth land surface area is 149 million sq km and there are only about 12,500 nuclear weapons in the world. Even if they were 10 megatons each* and were all detonated, with a severe damage blast radius of 20km (~1250 sq km), it'd cover about a tenth of the land available. Since the vast majority are designed to maximize the explosive yield, it wouldn't cause the kind of fallout clouds that people imagine, nor would it cause nuclear winter. It'd be brutal to live through (i.e. life expectancy of animals in Chernobyl is 30% lower) but nuclear weapons simple can't cause a human extinction. Not by a longshot. * As far as I know, no one has any operational nuclear weapons over 2 megatons and the vast majority are in the 10s and 100s of kiloton range, so my back of the napkin math is guaranteed to be 10-100x too high.