- Nearly half of U.S. kids are breathing unhealthy air, report says. These are the cleanest and most polluted cities. CBS News
- In the US, where people breathe increasingly dirty air, one small city stands out CNN
- More Americans are exposed to polluted air in the United States. See where. The Washington Post
- Nearly half of US children are breathing dangerous levels of air pollution, report warns The Guardian
- Earth Day report: Almost half of US population breathes unhealthy air The Hill
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