Roman Empire, lead

"A 2 to 3 points lower IQ doesn't sound like much, but when you apply that to the entire European population, it's quite a ...
Exposure to lead from mining probably lowered I.Q. levels in the empire, research has found. It might be the world’s first ...
DRI scientists analyzed Arctic ice core records to reconstruct historical atmospheric lead pollution from Ancient Rome, ...
The Roman Empire lowered IQ levels across Europe according to a new study, due to the vast quantities of lead pollution.
According to an NBC News report, an analysis of an ice core from Greenland conducted by climate and environmental scientist ...
A study analyzing Arctic ice cores reveals that lead pollution during the Roman Empire's height contributed to an estimated 2 ...