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Time since start of building of the Great Pyramid of Cholula (2,250 y) is 2.5 x Time since building of Angkor Wat (901 y)
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Fastest speed attained by a wind-powered watercraft (121.2 km/h)
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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