When it comes to the universal law of probability balance where creation is always at some point in time offset by destruction, a meteor strike as an existential threat to humankind is way down the list relative to our own human created nuclear threat. In fact the possibility of Trump and Putin getting caught up in a macho game of nuclear chicken that ends it all is probably at an incredible even odds, not to mention a multitude of other ways the world’s mighty nukes might be set of like a string of Chinese firecrackers.