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Pop. of Yemen (28.67million) is 4 x Pop. of Hanoi, Vietnam (7.23 million people)
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Forest in Iceland (2011) (310 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.