When you review self combustion, you should consider the obvious.
When the Shaman first decided to review from his male self, the idea of science and conversion, he did so as one male with one purpose.
This is why human self combustion is 1 human life per a huge amount of population, but it is 1 slow attack, unlike the ancient self combustion/disappearance of ancient life.
If anyone wants to quibble about self combustion and the nuclear, is to review the conditions of nuclear explosion and nuclear explosion has been studied to have been an ancient act of self destruction via all of the historical evidences reviewed.
As humanity was self combusted in huge populations in the past, to review why only a few individuals self combust in modern science as a slower condition of nuclear sciences, is to review the difference between ancient nuclear sciences and modern day nuclear sciences.
The cold condition of the nuclear fuel power plants is the difference, and why human life has only combusted in individual attacks, yet one day it could eventuate due to atmospheric heating and mass loss into a huge population event.
The ancients used the pyramid and Temples and underground water ways, whereas the modern technique is to build a power plant to hold the reaction inside of the plant and not outside in Nature. Yet nature that interacts with the same atmosphere that the power plant does is affected, as Nature demonstrates.
The evidence in the past reviews the conditions of nuclear combustion in evidence of population sudden disappearance, the crops/trees flattened at the same time, the under ground water system polluted. Above ground, the stone of ancient Temples melted, the mountain of Sinai with a blackened face, the mountain of Ararat with a fused eye/ark embedded in it with the evidence of a building structure. A huge release of atmospheric water in flood conditions, the same review of the atmospheric loss on origin Earth as an attack by black body radiation.