Did you know? Duration of Roman Empire (503 y) is 500 x Period of Earth's orbit (1 y)
Minimum diameter of a golf ball (42.7 mm)
/fact/minimum-diameter-of-a-golf-ball
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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
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Click here for Podcast: Andrew Elliott interviewed for New Books Network.