And a full environmental collapse is not even strictly necessary to end civilization. If the climate perturbation is large enough it will cause a mass migration and an economic disaster, either of which is enough to cause a war.
Can humanity peacefully deal with things like half of China becoming uninhabitable by humans? Dunno but if I had to pit humanity against this or the mirror bacteria I'd choose the latter.
Can humanity peacefully deal with things like half of China becoming uninhabitable by humans? Dunno but if I had to pit humanity against this or the mirror bacteria I'd choose the latter.