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Number of neurons in the human brain (86bn ) is 4 thousand x Pop. of Beijing, China (21.52 million people)
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Land used for agriculture in Puerto Rico (2011) (2,000 km^2)
"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.