First Traces of Man-Made Pollution Dated before the Industrial Revolution

February 10, 2015 4:44 PM

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Scientists found clear traces of lead pollution deep within the Peruvian Quelccaya Ice Cap that were dated back in the 16th Century, 200 years before the Industrial Revolution. Researchers speculate that the pollution was caused by the conquistadors that ran silver-mining businesses with help from the natives.

Although, the ice cap was located in the Peruvian Andes, the source of the man-made pollution was in Bolivia, on top of Potosí Mountain, where silver-rich mines had been exploited since ancient times.

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