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Pop. of Baghdad, Iraq (7.18 million people) is 2 x Pop. of Hangzhou, China (3.56 million people)
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Time since the end of the Cambrian geologic period (485 million y)
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"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.