Did you know? Time since the birth of Hero of Alexandria (2,014 y) is 2 thousand x Period of Earth's orbit (1 y)
Mass of water in Lake Kariba (180 trillion kg)
/fact/mass-of-water-in-lake-kariba
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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.