Did you know? Length of Central Park (NYC) (4 km) is 2 x Length of the Kentucky Derby horse race (2 km)
Time since first iPhone launched (15 y)
/fact/time-since-first-iphone-launched
Link
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.