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Estimated world population of Spanish Ibex (50,000 individuals) is 5 x Estimated world population of Nubian Ibex (10,000 individuals)
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Mass of an iPhone 6 (170 g)
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.