Did you know? Length of Africa (North to South) (8,000 km) is 4 thousand x Length of the Kentucky Derby horse race (2 km)
Fastest speed attained by a propeller aircraft (870 km/h)
/fact/fastest-speed-attained-by-a-propeller-aircraft
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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.