Did you know?
Length of Central Park (NYC) (4 km) is about as big as Length of the Copacabana beach in Rio de Janeiro (4 km)
Tweet this comparison
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.