The arctic has fossils of crocodiles and palm trees, and that's not because of continental drift, so the earth has been much warmer in the past, and life adapte

The arctic has fossils of crocodiles and palm trees, and that's not because of continental drift, so the earth has been much warmer in the past, and life adapted. It's a problem for civilization because we would have to adapt quickly, causing a lot of disruption. But we're not headed for Venus-like conditions.