>>wileyd+76
like what? are there more intelligent people? I've anecdotally heard this is a cause for crime reduction as people are less impulsive than they were, in conflict resolution? overall?
don't really know what takeaway I'm supposed to know about
>>yieldc+dD1
Lead exposure gives you brain damage: https://en.wikipedia.org/wiki/Lead_poisoning. If you damage your frontal lobes, you generally become more impulsive and less measured in your response to things. Ergo, chronic lead poisoning causes populations to become more aggressive and more likely to engage in crime.