Environment
Lead pollution across the Roman Empire would have caused IQ deficits
Lead records from Arctic glaciers indicate that people all over Europe would have been affected by pollution from metal smelting during the Roman era
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Lead records from Arctic glaciers indicate that people all over Europe would have been affected by pollution from metal smelting during the Roman era
Much of the Great Wall of China is covered in a biocrust of lichen, moss and cyanobacteria 鈥� it turns out this isn鈥檛 slowly destroying the wall, as was previously thought, but is slowing its degradation