Did you know? Mass of world gold production (2014) (2.99 million kg) is 2 thousand x Mass of an adult male Hippopotamus (1,500 kg)
Length of the Epsom Derby horse race (2.4 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.