Did you know?
Age of earliest stone hand axe (2.6 million y) is 500 x Age of oldest wooden wheel (5,150 y)
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Land used for agriculture in Tajikistan (2011) (50,000 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.