Did you know? Height of the `Burj Khalifa` skyscraper (Dubai) (830 m) is 400 x Women's Olympic High Jump record (2.06 m)
Land Area of El Salvador (20,720 km^2)
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.