The planet will absolutely still exist if temperatures rise 18º. But both terrestrial farming an aquaculture will collapse, and humans would only be able to survive in the polar regions.

Doesn't seem ok to me.

> ?? I dont understand. We can have both.

Heat dries the land and disrupts precipitation. CO2 increases heat. Therefore, continuing to drive up CO2 will reduce the availability of non-seawater.

I want independence, but I'm also an engineer who recognizes that nothing comes for free. The only way out of this problem is by converting atoms into smaller atoms and a lot of energy