Colonial-era air pollution found in Peruvian ice cap

February 10, 2015 3:09 PM

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Air pollution created by colonial silver mining efforts in Bolivia has been detected in a core sample taken from the north dome of the Quelccaya Ice Cap in Peru.

Scientists say that the metal-rich smog detected in the core sample is almost certainly a relic of Spanish colonization of South America, specifically from the silver mines atop Potosí, a UNESCO World Heritage Site. Long before Spanish conquistadors arrived on South American shores, Potosí had been ...

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