I think there may be a spiritual component to this too. I wish I could remember where I read this but I came across an article a few years ago that nuclear weapons are the only thing that can damage a soul. It further said that with the victims of Hiroshima and Nagasaki, spirits were STILL repairing those damaged souls. Apparently nukes don't simply operate in the physical world, but can affect time, space, and dimensions near the event.