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Time since the end of the Permian geologic period (252 million y) is 4 x Length of one Alautun, longest unit in Mayan calendar (63.1 million y)
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Forest in Iraq (2011) (18.05 km^2)
Yes, there's now a book based on these numbers. Oxford University Press: July 2018.
Click here to learn more about it.
Click here for Podcast: Andrew Elliott interviewed for New Books Network.