Did you know?
Length of a London Underground carriage (18 m) is 10 x Width of a ice-hockey goal (1.8 m)
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Land used for permanent pasture in Puerto Rico (2011) (14.21 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.