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.

Ozone

Legal Planet

APRIL 24, 2025

We dont have to tell you that air pollution remains a serious threat to communities across California, from Oakland to the Inland Empire. But what if we told you that most air regulators are fighting air pollution with one hand tied behind their back, unnecessarily? Read the report. Download as PDF

Air Pollution

Union of Concerned Scientists

FEBRUARY 28, 2025

Californias clean car rules will save drivers money at the pump, slow the damage from climate change, and reduce exposure to harmful air pollution for everyone in the state. Global Warming Emissions Reductions Air Pollution Reductions Total cost of vehicle ownership savings Reduction of 58.4

2026

PA Environment Daily

MAY 1, 2025

The air monitoring study is set to begin today, May 1, marking the start of a multi-year air monitoring campaign designed to comprehensively assess the air emissions of gas well development from construction through production. Air monitoring is likely to be completed in 2029. Read more here.]

Natural Gas

Union of Concerned Scientists

JUNE 17, 2025

However, in the past 25 years, the average emissions from a Class I line-haul locomotive have decreased by just 54 and 55 percent for particulate matter (PM 2.5 ) and nitrogen oxide (NO X ) emissions, respectively, well short of the 95 percent and 92 percent respective reduction required of new line-haul locomotives.

Regulations

Union of Concerned Scientists

JANUARY 21, 2025

Decades of government vehicle standards to improve vehicle efficiency and cut down on tailpipe pollution have saved car and truck drivers trillions of dollars at the pump, saved countless lives from reduced exposure to toxic air pollution , and avoided the extraction and burning of billions of barrels of oil.

Nitrogen Oxides

Union of Concerned Scientists

FEBRUARY 10, 2025

UCS/S&P Global Mobility 2024 This accelerated transition to cleaner on-road freight is vital to reduce harmful air pollution generated from trucks, given that theyre the largest source of ozone-forming nitrogen oxides (NOx) pollution in the nation and the largest source of lung-damaging fine particulates from vehicles on the road.

Nitrogen Oxides

Union of Concerned Scientists

MAY 15, 2025

The increase in loading docks is of particular importance when looking at the air and climate pollution impacts from warehouses. Additionally, heavy-duty trucks are responsible for over half of fine particulate pollution emitted from on-road vehicles as well as a growing share of climate-warming emissions.

Ground-Level Ozone

PA Environment Daily

FEBRUARY 20, 2025

The two most commonly reported concerns to the Department of Health are those related to air pollution and water contamination, specifically individuals on private well water. It is also an additional source of noise and light pollution. I also want to highlight fracking fluid and flaring from this list.

Natural Gas

Union of Concerned Scientists

JULY 16, 2025

Under Section 111 of the Clean Air Act, where the power plant carbon standards sit , a source category—such as the power sector—is only regulated if that source “causes, or contributes significantly” to air pollution demonstrated to endanger public health or welfare. If a source category isn’t listed, it isn’t regulated.

Carbon Emissions

Union of Concerned Scientists

AUGUST 2, 2022

A key step towards addressing climate change and air quality. Cleaning up heavy-duty vehicles is one of the most consequential tasks in reducing climate-warming greenhouse gases and toxic air pollution from the transportation sector. These policies will complement the important provisions in the Inflation Reduction Act of 2022.

Nitrogen Oxides

Union of Concerned Scientists

DECEMBER 21, 2023

But while greenhouse gas emissions may be reduced, a delivery fulfilled by a diesel-burning truck may lead to increases in emissions of smog-forming nitrogen oxides and lung-damaging particulate matter.

Nitrogen Oxides

Frontiers

JULY 6, 2021

A new epidemiological study by the open access publisher Frontiers is the first to show that the risk of developing dysmenorrhea increases by more than 30 times for women and girls who are exposed long-term to air pollutants such as carbon and nitrogen oxides and fine particulate matter. µm in diameter (‘PM2.5’)

Air Pollution

Union of Concerned Scientists

AUGUST 20, 2024

Reductions in pollutants including particulate matter, nitrogen oxides, carbon monoxide and others, help to clean the air – not just for children riding the bus, but everyone in the communities where these buses travel, as well as near the refineries where fuels are produced. The figure below shows the results.

Electricity

New Scientist

JANUARY 18, 2022

Levels of nitrogen oxides and ozone on a par with average concentrations next to major UK roads led to a reduction in the number of pollinators counted on the crops by up to 70 per cent

Nitrogen Oxides

PA Environment Daily

APRIL 26, 2024

The Department of Environmental Protection published notice in the April 27 PA Bulletin inviting public comments on a proposed declaration of an Exceptional Air Quality Event due to 2023 wildfires from Canada and New Jersey causing elevated levels of nitrogen oxides and volatile organic compounds impacting ozone pollution in Pennsylvania.

Air Pollution

Union of Concerned Scientists

FEBRUARY 9, 2024

First, there’s air pollution. Gas plants and infrastructure emit nitrogen oxides (NOx) during combustion, which degrade local air quality. Exposure to NOx and other gas infrastructure air pollutants has been associated with respiratory illnesses and an increase in childhood asthma rates.

Clean Energy

PA Environment Daily

MAY 11, 2023

May 11, the Environmental Integrity Project and Clean Air Council filed a federal lawsuit against the Shell Petrochemical Plant for repeatedly violating permitted air pollution limits from a massive new plastics production plant in Beaver County, which opened last year. In a lawsuit filed in the U.S.

Air Pollution

Union of Concerned Scientists

APRIL 2, 2024

Air pollution from ports comes from many sources: ships, trains, tugboats, cargo equipment, and – quite importantly – the trucks that move cargo containers to and from ports. Because drayage trucks tend to be among the oldest tractor trucks on the road, they tend to pollute at greater rates than other tractors.

Air Pollution

PA Environment Daily

FEBRUARY 2, 2023

On February 2, the Environmental Integrity Project and Clean Air Council filed a notice of intent to sue Shell Chemical Appalachia for repeated violations of air pollution permit limits at its petrochemical plant in Beaver County.

Air Pollution

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.

Carbon Dioxide

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.

Air Pollution

Union of Concerned Scientists

NOVEMBER 15, 2022

Emissions which create smog and impact human health can also be mitigated; sulfur oxides can be reduced by 89% and nitrogen oxides by 78%. By using recycled instead of newly mined materials, reduction of climate-changing greenhouse gas emissions is approximately 64%.

Electricity

Union of Concerned Scientists

OCTOBER 21, 2022

Despite their low numbers, these trucks are responsible for around one-third of smog-forming nitrogen oxide (NOx) emissions, a quarter of lung-damaging fine particulate matter (PM2.5) Tractor trucks make up just about 1 percent of all on-road vehicles in California.

Nitrogen Oxides

PA Environment Daily

APRIL 12, 2023

tons of nitrogen oxides. tons of nitrogen oxides. From Norfolk Southern to Shell, we deserve transparent and real-time information about what pollution is being dumped on our communities. The PADEP must do more to hold these polluters accountable.” Shell reported emissions of 370.688 tons.

Air Pollution

Union of Concerned Scientists

DECEMBER 1, 2022

California’s leadership on reducing truck pollution has been on full display the past few years, passing critical regulations requiring 90 percent reduction in smog-forming nitrogen oxide (NO X ) emissions from diesel trucks and requiring manufacturers sell an increasing share of electric trucks to move away from fossil fuels altogether.

Nitrogen Oxides

Union of Concerned Scientists

SEPTEMBER 17, 2024

Medium- and heavy-duty vehicles (MHDVs), like the big rigs on our highways and the vans that deliver our packages, make up just over 1 in 10 of the vehicles on our roads, but are responsible for over half of ozone-forming nitrogen oxide pollution and lung-damaging fine particulate pollution from on-road vehicles.

Electricity

Union of Concerned Scientists

NOVEMBER 16, 2022

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. Extracting fossil fuels ruins ecosystems, notably those that indigenous communities around the world depend on.

Fossil Fuels

PA Environment Daily

DECEMBER 20, 2023

Unconventional, conventional, pipeline, storage and other oil and gas facilities have been self-reporting air emissions from their facilities since 2012 and do so regularly under Title V and other Air Quality permits issued by the Department of Environmental Protection. tons - 1,3 Butadiene [EPA Hazardous Air Pollutant] -- 55.68

Air Pollution

Union of Concerned Scientists

MAY 4, 2023

Trucks and buses on California’s roads and highways are responsible for the majority of lung-damaging fine particulate and ozone-forming nitrogen oxide emissions, and a sizable amount of climate-warming greenhouse gas emissions as well.

Nitrogen Oxides

Union of Concerned Scientists

NOVEMBER 3, 2022

Primarily, these have focused on the 2007 EPA regulations, which were the first step in the phase-in of diesel engine standards meant to cut particulate emissions by more than 80 percent and smog-forming nitrogen oxides (NO X ) emissions by 90 percent.

2007

Enviromental Defense

SEPTEMBER 20, 2023

Along with their contribution to larger climate change impacts, gas plants also cause local air pollution – mainly nitrogen oxides and particulate matter. Respected bodies like the International Energy Agency have been clear – there is no room for new fossil fuel infrastructure if we want to hold warming to 1.5

Nitrogen Oxides

PA Environment Daily

FEBRUARY 22, 2024

The pollutants included in these additional penalties were-- volatile organic compounds, nitrogen oxide, carbon monoxide, hazardous air pollutants and “other pollutants,” excluding carbon dioxide emissions. Paragraph 14.b b of the May 24, 2023 Consent Order and Agreement-- -- $521,549.62

2023

PA Environment Daily

AUGUST 6, 2022

The following factsheet on asthma and air pollution from natural gas facilities was compiled by the Environmental Health Project -- Asthma is a chronic disease that affects breathing. Asthma attacks, also known as exacerbations, may be triggered by indoor and outdoor air pollution, stress, and other physical and environmental factors.

Air Pollution

PA Environment Daily

FEBRUARY 12, 2024

Steel Edgar Thomson Plant is an iron and steel making facility with a history of noncompliance with air pollution regulations and a major source of air pollution in Allegheny County. EPA’s order directs ACHD to ensure that this Title V permit has air quality monitoring and testing requirements sufficient to assure U.S.

Nitrogen Oxides

PA Environment Daily

JUNE 30, 2023

nitrogen oxides, 21.63 hazardous air pollutants. Potential emissions from all sources after completion of the project are estimated to be-- in tons per year-- 0.46 volatile organic compounds; 12.31 carbon monoxide, 5.61 Particluate 10 , and 3.39 Public comments are due July 31.

Nitrogen Oxides

PA Environment Daily

MARCH 28, 2024

tons of nitrogen oxide emissions in 2023. The Nesquehoning site burns waste coal and tires to produce electricity for its bitcoin mining operation. These fuels produced 430.4 tons of sulfur dioxide emissions and 291.5

Nitrogen Oxides