Did you know?
Number of helicopters in the world (69,700 ) is 40 x Pop. of Norfolk Island (2016) (1,748)
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Distance from London to Edinburgh (535 km)
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.