Remove 2010 Remove Ground-Level Ozone Remove Nitrogen Oxides
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Nearly Half of US Breathes Unhealthy Levels of Pollution—Cars and Trucks Largely to Blame

Union of Concerned Scientists

It presents air pollution data at the county-level for two pollutants, deadly fine particulate matter (PM 2.5 ) and ground-level ozone. is emitted directly from the tailpipes of gasoline and diesel vehicles, while ozone and even more PM 2.5 Internal combustion vehicles are largely to blame, since PM 2.5

Ozone 227
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Indirect Source Rules: An Emerging Route Toward Clean Freight

Union of Concerned Scientists

Between 2010 and 2021, not only did the frequency of new warehouse construction rise, but the size of these new warehouses increased by nearly 150 percent compared to the norm. These facilities are largely concentrated around areas with existing logistics infrastructureports, railyards, and the like.