"The earth will shrug us off like fleas" We'd be lucky to be fleas.
The world will recover, because the world itself is never out of balance. It doesn't have a consciousness, so it doesn't care. It is us that need a particular set of conditions to survive. We are the only ones to suffer from the change in conditions. And animals too, but at least they don't think too far into the future.
I've often wondered just how far animals think into the future.
i.e. Goldfish are often used as an example of lack of memory but have you ever noticed that Goldfish always know when it's feeding time?
I have not noticed, as I have never owned one. But, I suspect some animals have some foresight. How much, I don't know.