Did you know? Diameter of the Earth (12,760 km) is 5 x Length of the Zambezi River (2,574 km)
Land used for agriculture in South Africa (2018) (964,000 km^2)
/fact/land-used-for-agriculture-in-south-africa
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.