Did you know?
Number of active users of Facebook (2015) (1.59bn ) is 250 x Pop. of Sierra Leone (6.31million)
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Time since the first modern humans (250,000 y)
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.