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Mass of all the Earth's biomass (560 trillion kg) is 2.5 thousand x Mass of water in Ullswater (English Lake District) (223 billion kg)
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Age of oldest musical instrument (42,000 y)
"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.