Did you know?
Time since the birth of Newton (378 y) is 5 x Period of Halley's Comet's orbit (75.3 y)
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Number of helicopters in the world (56,200 )
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.