Did you know? Height of the spire of Salisbury cathedral (123 m) is 50 x World High Jump Record (1993) (2.45 m)
Land used for arable in Guinea-Bissau (2018) (2,306 km^2)
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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.