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By Carole Tanzer Miller HealthDay ReporterSUNDAY, April 12, 2026 (HealthDay News) — Air pollution just isn’t what it used to be.
While levels of lead and sulfur dioxide have dropped due to environmental regulations, other threats to air quality persi… [2579 chars]
Source: U.S. News & World Report | Published: 2026-04-12T11:00:00Z
Credit: U.S. News & World Report
