Did you know?
Period of Neptune's orbit (164.8 y) is 2 x Length of the Punic Wars (Rome v Carthage) (82 y)
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Estimated world population of Gelada (200,000 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.