Amazon, Africa, .... And you underestimate how quickly forests will grow back. Sure, it will take maybe 100 years, but civilization was built in 4000, so there

Amazon, Africa, .... And you underestimate how quickly forests will grow back. Sure, it will take maybe 100 years, but civilization was built in 4000, so there is no rush. Also, Saudi Arabia is sitting on an ocean of oil, not that hard to extract.