The new research adds context to a long-standing debate about the role lead pollution and poisoning may have played in the collapse of the Roman Empire. Some historians have argued that Roman elites and emperors who purportedly displayed odd,

Using modern evidence of lead pollution and its health effects, the international team calculates that lead exposure in the Roman golden age could have caused a population-wide drop in IQ of about 2.5 to 3 points per person. And that goes for most of the Roman Empire, including its provinces of Gaul, northwestern Africa, Iberia, and Britannia.

Lead records from Arctic glaciers indicate that people all over Europe would have been affected by pollution from metal smelting during the Roman era

Atmospheric lead pollution likely caused cognitive decline among citizens of the Roman Empire, according to research published Monday in the Proceedings of the National Academy of Sciences. Researchers analyzed ice core records for an approximately thousand-year period corresponding roughly with the period from the Roman Republic through the decline of the empire,

Learn how researchers examined lead levels in ice cores dating back to the Roman Empire, and found concentrations high enough to affect IQs.

The Romans invented concrete, aqueducts, and the basis of the modern calendar. But their achievements could have been even greater had their brains not been addled by lead poisoning, a study suggests.