Did you know? Pop. of London, United Kingdom (8.54 million people) is 2.5 thousand x Estimated world population of Wild Water Buffalo (3,400 individuals)
Mass of water in the Great Lakes of North America (22.7 quadrillion kg)
/fact/mass-of-water-in-the-great-lakes-of-north-america
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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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