Did you know?
Pop. of Switzerland (8.29million) is about as big as Pop. of Ho Chi Minh City, Vietnam (8.22 million people)
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Fastest speed attained by a manned rocket aircraft (7,270 km/h)
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.