Traces of air pollution from 16th-century Spanish silver mines were discovered deep inside an ice cap in the Peruvian Andes.
The rest of the story
livescience.com
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Hints of Colonial Pollution Hidden in Andean Ice Cap
Traces of air pollution from 16th-century Spanish silver mines were discovered deep inside an ice cap in the Peruvian Andes.
The rest of the story
livescience.com
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