Did you know?
Estimated world population of Blue Duiker (7 million individuals) is 2.5 thousand x Number of seats in Carnegie Hall (2,804 )
Tweet this comparison
Height of a tennis net at the centre (914 mm)
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.