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Time since the emergence of earliest insects (480 million y) is 100 x Age of earliest mammoth fossils (4.8 million y)
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Land Area of South Sudan (644,000 km^2)
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.