Did you know?
Mass of heaviest allowable Flyweight professional boxer (50.8 kg) is 250 x Mass of an iPhone 13 Pro (204 g)
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Number of passengers on an Underground train on London's Northern Line (800 )
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.