But the earth has seen higher levels of carbon already. It has seen higher temperatures and lower temperatures. And we humans inhabit many climate zones already.

This is like the “They can just sell their house and move” thing Ben Shapiro said about what people who live on climate change affected coasts will do. Who will they sell their house to, Ben??

Humans can inhabit many climate zones, but several of them will become uninhabitable. The ones that contain the most people. And those people have to go somewhere. And all of the food that used to be produced in that place is gone. All of the ecosystems in those areas die, etc. etc.

This is the “war and famine” part of climate change that people don’t often talk about. Most of the death and chaos isn’t going to be from people literally immediately burning up to death, it’s from the secondary effects of rising temperatures, drought, killing entire ecosystems, and forcing billions of people to leave their homes or die. And the migrant crises that come with all of that. If you thought Syria was bad…

And you’re right, the earth has seen higher levels of carbon. The earth itself will probably be OK.