Did you know? Time since the emergence of earliest reptiles (315 million y) is 2.5 x Time since the emergence of flowering plants (125 million y)
Mass of water in Lake Kariba (180 trillion kg)
/fact/mass-of-water-in-lake-kariba
Link
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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