Did you know? Time since the emergence of multicellular life (2.1 billion y) is 4 x Time since the emergence of earliest fish (530 million y)
Number of floors in the Burj Khalifa skyscraper (163 )
/fact/number-of-floors-in-the-burj-khalifa-skyscraper
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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.