Did you know? Height of Niagara Falls (57 m) is 1 thousand x Diameter of a regulation pool ball (57.1 mm) Tweet this comparison
Estimated world population of domestic Cats (600 million individuals)
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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.