Did you know? Time since first domestication of horses (5,500 y) is 50 x Time since the first fixed wing scheduled air service (110 y)
Time since the earliest primates (75 million y)
/fact/time-since-the-earliest-primates
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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.