Did you know? Circumference of Mercury (15,330 km) is 5 x Length of the Rio Grande (USA, Mexico) (3,057 km)
Other land in Estonia (2018) (10,890 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.