An early publication study from July detailed the discovery of human-caused metal contamination, believed to be linked to the construction of the Giza necropolis.

Chemical analysis of sediment cores taken from the Nile floodplain at Giza reveal a significant amount of copper pollution (“contamination”) within the “regnal years of Kings Khufu, Khafre, and Menkaure, consistent with metalworking during the preparation and construction of the edifices,” an international team of researchers wrote in the study, published in the journal Geology.

The samples reportedly represent the first known major instance of human-induced metal contamination (ie: pollution), a researcher said. “The sediments are as important as the monuments,” study co-author Christophe Morhange told ZME Science. The metal work is dated to around........

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