Did you know? Length of the Beijing-Hangzhou Grand Canal (1,794 km) is 250 x Length of the longest canal tunnel (Rove Tunnel in France) (7.12 km)
Side of a casino-standard dice (19 mm)
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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.