Did you know? Diameter of Saturn's rings (282,000 km) is 40 x Length of the Amazon River (6,990 km)
Pop. of Mexico City, Mexico (8.88 million people)
/fact/population-of-mexico-city-mexico
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.