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That drop may have more to do with removing lead from gasoline than any social changes. Biological factors are staggeringly huge.
by ThrustVectoring 12y ago
That drop may have more to do with removing lead from gasoline than any social changes.
Biological factors are staggeringly huge.
- snowwrestler 12y agoViolence and civil rights in the U.S. are also much better than they were 150 years ago, well before we used gasoline widely at all.
- ThrustVectoring 12y agoSo is nutrition, preventative medicine, and FDA enforcement of various public health ordinances.