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Length of Tiananmen square in Beijing (880 m) is 4 thousand x Length of a standard DL business envelope (220 mm)
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Forest in Colombia (2011) (620,000 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.