And certainly the pace of change is very alarming, but millions of years ago, when the temperature was so high, I'm pretty sure the Earth was capable of supporting just as much or more biomass.
"People have never seen anything close to what we are facing in the near term, and absolutely nothing like what awaits for us in 100 years." I keep seeing people make this claim, assuming it is self-evident that this means apocalypse. It's true that this has never happened before, and that's the only thing that's set in stone. Humans possess tremendous ingenuity and flexibility. Like I keep saying, assuming everyone doesn't starve to death, people can adapt to anything else.