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Time since the birth of Leonardo da Vinci (570 y) is 5 x Time since first Model T Ford launched (114 y)
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Land used for arable in Rwanda (2011) (290 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.