Did you know?
Mass of a typical American football (410 g) is 2.5 x Mass of a regulation pool ball (165 g)
Tweet this comparison
Mass of world gold production (2014) (2.99 million kg)
If this was a standard unit ...
"This is a fun and riveting book. Written in an accessible and engaging way, it is unputdownable." Frost Magazine
Click here to learn more about it.
Click here for Podcast: Andrew Elliott interviewed for New Books Network.