Did you know? Diameter of Mercury (4,880 km) is about as big as Length of I-90 highway from Boston to Seattle (4,860 km)
Land Area of Botswana (567,000 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.