Did you know?
Mass of water in the Three Gorges Dam (China) (39.3 trillion kg) is 5 x Mass of world coal production (2013) (7.82 trillion kg)
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Land used for agriculture in Namibia (2011) (389,000 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.