2021 Atmosphere Nitrogen Oxides Technology 
Union of Concerned Scientists
JUNE 6, 2023
Older vehicles (pre-2004) make up 19% of the state’s passenger vehicles and only 12% of miles driven, yet they emit almost 3 times as much smog-forming, nitrogen-oxide pollution as all 2004 and later vehicles combined. These pollutants react in the atmosphere to form harmful particulate matter pollution known as PM 2.5.
Union of Concerned Scientists
MAY 13, 2024
The air quality for this report was calculated using data reviewed by EPA from 2020, 2021, and 2022. That means it includes the extreme wildfires exacerbated by the fossil fuel industry that burned more than 4% of California in 2021 and 2022. Ozone plays a dual role in our atmosphere.
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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.
Union of Concerned Scientists
NOVEMBER 30, 2023
A 2021 study found that a majority of PM 2.5 Reducing fossil fuel pollution leads to fewer deaths and more healthcare savings UCS found that decarbonization policies result in a decline in key pollutants such as PM 2.5 , nitrogen oxides, and sulfur oxides. These sources of PM 2.5 Source: UCS.
PA Environment Daily
JANUARY 21, 2022
The AFIG Program funds projects that replace older gasoline- or diesel-fueled vehicles with cleaner fuel vehicles that helps reduce emissions of carbon monoxide, particulate matter, volatile organic compounds, nitrogen oxides, and carbon dioxide, a principal greenhouse gas.
Union of Concerned Scientists
DECEMBER 12, 2023
The court sided with the community and ordered the city to use an analytically sound model developed by Eric Schwartz of the University of Michigan and Jacob Abernethy of the Georgia Institute of Technology to efficiently locate and replace the pipes.
PA Environment Daily
AUGUST 3, 2021
Concentrations of CO2 in the atmosphere have risen approximately 47 percent since 1750, mostly from the burning of fossil fuels for energy. Strategies for capturing carbon from fossil fuel power plants, to prevent it from entering the atmosphere, have long lingered on the sidelines. from 1990–2019. Pennsylvania is banking on it.
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