12000 years ago, 95% of humans lived in the blue hull.
20 years ago, 95% of humans lived in the red hull.
We've become a bit better at dealing with cold, wet, and dry, but by and large we live in the same climate as our distant ancestors. pic.twitter.com/uBezLQDFTG
— Richard Tol (@RichardTol) August 13, 2020
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