Did you know? Height of Niagara Falls (57 m) is about as big as Height of the Leaning Tower of Pisa (56.7 m)
High estimate of number of American Black Bears (950,000 individuals)
/fact/high-estimate-of-number-of-american-black-bears
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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.