Perus guano harvesting makes gentle comeback

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Peru has rediscovered guano, a natural resource that was once its second-most famous export, after gold. Guano, from the Quechua “wano”, meaning excrement, is deposited by the millions of birds that inhabit 21 islands and 11 pensinsulas along the Pacific coast, now protected areas. In some places the guano is metres deep, and it is ...

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