Did you know? Circumference of Earth's Moon (10,920 km) is 500 x Height of Olympus Mons (Mars) (21.9 km)
GDP in Belgium (2019) (533 billion USD p/a)
/fact/gdp-in-belgium
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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.