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Height of Mount Everest (8.85 km) is 40 x Height of the Hoover dam wall (221.4 m)
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Forest in Bolivia (2011) (580,000 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.