Did you know?
Time since first humans in Americas (15,000 y) is 200 x Time since introduction of the first mass-produced helicopter (Sikorsky R-4) (75 y)
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Land used for agriculture in Macedonia (2011) (11,390 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.