Did you know? GDP in South Korea (2019) (1.647 trillion USD p/a) is 25 x GDP in Ghana (2019) (65.4 billion USD p/a)
Mass of a USA quarter (25c piece) (5.67 g)
/fact/mass-of-a-usa-quarter-25c-piece
Link
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.