Union of Concerned Scientists

MARCH 12, 2024

In 1963, a typical car—which ran on leaded gasoline without pollution control devices— emitted 520 pounds of hydrocarbons, 1,700 pounds of carbon monoxide, and 90 pounds of nitrogen oxide every 10,000 miles traveled. Cars and trucks are a lot cleaner than when I was growing up. Transit agencies in Washington, D.C.,

Nitrogen Oxides 317

Nitrogen Oxides Carbon Monoxide Electricity Law 317

Union of Concerned Scientists

SEPTEMBER 26, 2024

Fossil fuel combustion produces carbon dioxide (CO2), the most abundant global warming pollutant, but also produces local pollutants such as fine particulate matter (PM2.5), nitrogen oxides (NOx), carbon monoxide (CO) and volatile organic compounds (VOCs). Bermix Studio/Unsplash PM2.5: have a diameter of 2.5

Ground-Level Ozone 323

Ground-Level Ozone Fossil Fuels Ozone Air Pollution 323

Union of Concerned Scientists

MAY 21, 2025

Between 1990 and 2020, national concentrations of ozone were reduced by 25 percent, but this progress is eroding. From 2000 to 2020, national PM 2.5 Analyzing vehicle pollution control technologies and testing pollution emissions from vehicles. We cannot afford to allow the EPAs work to be undercut.

Ozone 246

Ozone Ground-Level Ozone Air Pollution Clean Air Act 246