Roman Empire, lead and IQ

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, ...
"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 ...
The Roman Empire lowered IQ levels across Europe according to a new study, due to the vast quantities of lead pollution.
Lead exposure is responsible for a range of human health impacts, with even relatively low levels impacting the cognitive ...