Did you know?
Duration of Egyptian Empire (500 y) is 2 x Period of Pluto's orbit (248 y)
Tweet this comparison
Estimated population of African Wild Dogs (6,600 individuals)
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.