Did you know? Narrowest width of the English Channel (32.3 km) is 2.5 x Length of the Marina beach in Chennai, India (13 km)
Height of the vertical drop of cliff on Mount Thor, Canada (1.25 km)
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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.