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3 results for "lead exposure"
A century of preserved family hair reveals one of America's greatest environmental success stories. After regulations banned lead from gasoline and paint, human exposure plummeted to 1% of what it once was.
Scientists analyzed century-old hair clippings and discovered lead exposure has plummeted by more than 100 times since the 1960s. The stunning drop shows how environmental protections can transform public health in just a few decades.
Century-old hair from Utah family albums reveals lead levels dropped 100 times after regulations kicked in. The proof that environmental protections work is literally written in our DNA.