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Wildfire Smoke Is Now a Bigger Prenatal Threat Than Human Sources of Air Pollution
In 1965, a presidential advisory panel issued a report warning that pervasive chemical and carbon pollution was harming environmental health and changing the climate. Five years later, President Richard Nixon signed the Clean Air Act.  Since that 1970 law and its amendments were passed, combined emissions of a half dozen harmful air pollutants from vehicles […]
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