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Estimated world population of Brown Hyena (8,000 individuals) is 200 x Number of airports in Ireland (40 )
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Pop. of Tehran, Iran (8.15 million people)
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.