Did you know? GDP in Mali (2019) (17.51 billion USD p/a) is 10 x GDP in Seychelles (2019) (1.748 billion USD p/a)
Mass of water in Lake Kariba (180 trillion kg)
/fact/mass-of-water-in-lake-kariba
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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.