Did you know?
Duration of Roman Empire (503 y) is 20 x One average human generation (25 y)
Tweet this comparison
Forest in Belarus (2011) (88,600 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.