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Length of North America (North to South) (8,600 km) is 25 x Length of the River Thames (346 km)
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Estimated world population of Vicuna (347,000 individuals)
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.