Air Pollution Atmosphere Nitrogen Oxides 
Union of Concerned Scientists
MAY 21, 2025
Over 156 million people in the US are exposed to unhealthy levels of air pollutants, according to the recently published 2025 State-of-the Air report from the American Lung Association (ALA). For 25 years the report has helped people across the country understand the quality of the air in their communities.
Union of Concerned Scientists
FEBRUARY 9, 2024
Responsible for 12 percent of all US global warming emissions from human activities, methane traps significantly more heat per molecule than carbon dioxide, making it 86 times more harmful for the first 20 years after it is released into the atmosphere. First, there’s air pollution.
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Union of Concerned Scientists
SEPTEMBER 11, 2024
Switching from fossil fuels like gasoline to increasingly clean electricity sources is vital for hitting climate and air pollution goals. Eliminating gasoline combustion also means getting rid of harmful pollutant emissions like nitrogen oxides and reactive organic gases.
PA Environment Daily
FEBRUARY 17, 2023
On February 17, the Clean Air Council and the Environmental Integrity Project sent a letter to the Department of Environmental Protection urging the state to temporarily halt operations at a Shell plastics chemical plant in Beaver County that has repeatedly violated air pollution limits and recently released plumes of black smoke for several hours.
Union of Concerned Scientists
NOVEMBER 16, 2022
of the observed rise in atmospheric carbon dioxide and 52 percent of the rise in global average temperatures between 1880 and 2015. They obviously include climate change, but it also include health impacts from air pollution and water pollution. The current carbon-based energy system has serious downsides.
Breezometer
DECEMBER 7, 2021
As the complexity of ozone pollution is often misunderstood, let's take a closer look at this particular pollutant. The protective ozone layer which exists in the upper atmosphere is vital to life on earth. Good Ozone’: Our Essential Sun Shield. How is Ozone Created?
Enviromental Defense
OCTOBER 12, 2023
Instead, this false solution will foist more waste and air pollution on a community that is already overburdened with both. Instead of subsidizing these polluting waste and fossil-burning projects, the government should invest in truly renewable energy, which is a cleaner and more affordable source of power.
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