Did you know? Diameter of Neptune (49,200 km) is 40 x Length of the Rhine River (1,233 km)
Number of skyscrapers in Hong Kong (>150m tall) (554 )
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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.