Alice Outwater
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![At the height of the Peruvian guano boom, people mined poop instead of gold](https://www.popsci.com/wp-content/uploads/2019/03/29/QY3QPPLQG4IBMRN6HA5EIPJBCA.png?w=632)
Agriculture
At the height of the Peruvian guano boom, people mined poop instead of gold At the height of the Peruvian guano boom, people mined poop instead of gold
By Alice Outwater
April 2, 2019