Did you know?
Mass of Empire State Building (331 million kg) is 25 x Mass of Brooklyn Bridge (13.32 million kg)
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Land Area of San Marino (61 km^2)
If this was a standard unit ...
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.