Did you know?
Mass of a concert grand piano (450 kg) is 1 thousand x Mass of a typical rugby ball (450 g)
Tweet this comparison
Other land in Botswana (2011) (200,100 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.