A "factor of one hundred, one hundred times" is just a fancy way of saying "10,000"
A pit I mile to a side
1 cubic mile?
As opposed to imperialistic expansion?
it almost begs the question to use general relativity to calculate a result predicted by general relativity.
Areas with radiation presently showed decomposition
It's probably reduced to oxidation (pun not intended). So not really proper decomposition and I would expect impaired nitrogen "recuperation", soil degradation and desertification.
home to your SO and they ask you
In this case, it's "OS", as in Other Self.