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Age of the earliest city (6,500 y) is 2.5 x Time since the birth of Pythagoras (2,592 y)
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Land used for agriculture in Portugal (2011) (246.1 km^2)
If this was a standard unit ...
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.