Did you know?
Cruising altitude of Airbus commercial jet (13 km) is 200 x Height of Sydney Opera House (65 m)
Tweet this comparison
Number of fixed-line telephone subscribers in the world (0.984bn )
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.