screenshot with caption: Lead exposure in last century shrank IQ scores of half of Americans, study finds Leaded gasoline calculated to have stolen more than 800 million cumulative IQ points since the 1940s Date: March 7, 2022 Source: Duke University Summary: Researchers calculate that exposure to car exhaust from leaded gas during childhood stole a collective 824 million IQ points from over 170 million Americans alive today, more than half of the population of the United States.
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