Legal Planet

MARCH 17, 2025

In late 2009, EPA made a formal finding often called the Endangerment Finding that greenhouse gases may endanger human health and welfare. The Bush Administration argued that greenhouse gases dont meet that requirement. The only question , the Court said, was the scientific evidence about the harmfulness of greenhouse gases.

Clean Air Act

Legal Planet

DECEMBER 18, 2024

Notably, in granting the Advanced Clean Car waiver , EPA relied heavily on the fact that the program cuts traditional air pollutants, including those that cause ozone pollution, from vehicles. The fact that the standards also cut greenhouse gases is a secondary consideration. Here’s some important background.

Clean Air Act

Circle of Blue

JULY 9, 2025

These trends converged in Paris in 2015 when 195 countries signed a legally binding international treaty on climate change to reduce greenhouse gas emissions and attempt to keep global temperatures from rising to more dangerous levels. In the United States, coal production actually did peak in 2008 at 1.2

Clean Energy

Union of Concerned Scientists

JANUARY 16, 2025

Costly and Inequitable In addition to emitting greenhouse gases, gas power plants also pollute the air with nitrogen oxides, sulfur dioxide, particulate matter, and volatile organic compounds.

Nitrogen Oxides

Union of Concerned Scientists

FEBRUARY 10, 2025

emissions, and just under 15 percent of climate-warming greenhouse gas emissions from the states on-road vehicles. EPA 2024 Additionally, emissions of climate-warming greenhouse gases from trucks are on the rise, up nearly 80 percent in the past 3 decades compared to a less than 10 percent increase among light-duty passenger vehicles.

Nitrogen Oxides

Legal Planet

APRIL 30, 2025

China will set out new goals for emission cuts by 2035 covering the entire scope of the economy, including all greenhouse gases, not just CO2 ahead of the COP30 summit, Xi said this week. China is going bigger and bigger while the US goes much much smaller. Bloomberg has the story, which some declared the story of the week if not the year.

Fossil Fuels

PA Environment Daily

JULY 10, 2025

VOCs, such as benzene, are harmful to health and can contribute to ground level ozone or smog that damages lungs and can trigger asthma attacks. Methane is a highly potent greenhouse gas -- 80 times more potent than carbon dioxide in the first 20 years after it is released into the atmosphere.

Natural Gas

PA Environment Daily

JULY 30, 2025

million Pennsylvanians living within a half-mile of active well sites. -- Allegheny, Bucks, and Philadelphia counties all received a D or F grade for ozone pollution in the American Lung Association’s 2025 State of the Air report. -- Nationally, air pollution from methane and co-pollutants causes an estimated $77 billion in annual health costs.

Clean Air Act

Real Climate

MAY 21, 2023

The dominant factors are changes in CO2 (a cooling), ozone depletion (a cooling), warming from big volcanoes, and oscillations related to the solar cycle. That means the greenhouse substances are basically just CO2 and ozone, and they absorb in quite different parts of the spectrum. The basic concept is easy to grasp though.

Cooling

Inside Climate News

APRIL 3, 2023

By Phil McKenna Emissions of a small group of chlorofluorocarbons (CFCs), man-made chemicals that destroy Earth’s protective ozone layer and fuel global warming, are back on the rise after their production was all but banned more than a decade ago, a new study concludes.

Ozone

Real Climate

JULY 10, 2022

Step 1: There is a natural greenhouse effect. Thus there must be a large amount of IR absorbed by the atmosphere (around 158 W/m 2 ) – a number that would be zero in the absence of any greenhouse substances. Step 2: Trace gases contribute to the natural greenhouse effect. The Earth’s Energy Budget (NASA).

Radiation

Real Climate

SEPTEMBER 19, 2021

So this is an attempt to put all of that in context and provide a hopefully comprehensive guide to how, when, and why to properly compare the two greenhouse gases. You might recall that GWP is defined as the ratio on per-kg basis of the temperature impact of other greenhouse gases compared to CO 2 over a specific time period.

Carbon Dioxide

Real Climate

AUGUST 12, 2021

The cause of our changing climate is the increase in atmospheric greenhouse gas concentrations that we have released into the air. Carbon dioxide (CO 2 ) is the most important greenhouse gas that we have added to the atmosphere, however, some of it has been absorbed by land and oceans.

Atmosphere

Scientific American

MARCH 6, 2024

A California resident faces charges under a 2020 law that seeks to curb powerful planet-warming and ozone-depleting hydrofluorocarbons

Greenhouse

Union of Concerned Scientists

AUGUST 2, 2022

Last week, Senators Schumer and Manchin announced a compromise on a reconciliation bill, called the Inflation Reduction Act of 2022 , that includes significant climate and air quality progress and a goal to reduce greenhouse gas emissions nationwide by 40 percent by 2030. A key step towards addressing climate change and air quality.

Nitrogen Oxides

Legal Planet

SEPTEMBER 30, 2021

Westlaw searches for “global warming” and “greenhouse effect” pick up only a handful of citations before 1985. But it’s not totally clear what he meant, because “climate change” was used at the time to refer to a range of issues including acid rain, damage to the ozone layer, local weather control efforts, and desertification.

Carbon Dioxide

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

SEPTEMBER 30, 2024

For example, inclusion of a non-chemical stressor—higher daily temperatures—was considered in the scientific document used to support the ozone standard , since there is evidence that exposure to higher daily temperatures together with ozone exposure is associated with higher mortality.

Air Pollution

Union of Concerned Scientists

JULY 9, 2024

Hydrofluorocarbons (HFCs) were developed to replace a type of chemical that impacted the ozone layer in our upper atmosphere, but these replacements are potent greenhouse gases. Phasedown of hydrofluorocarbons There are several rules that inform and facilitate the phasedown of hydrofluorocarbons.

Toxic Substances Control Act

Real Climate

SEPTEMBER 26, 2022

A second set of climate model simulations can be run with all of the factors we think of as important – the natural drivers of course, but also the anthropogenic changes (greenhouse gas changes, air pollution, ozone depletion, irrigation, land use change etc.).

Climate Change

Legal Planet

FEBRUARY 16, 2023

They include, but are not limited to, altering rainfall and monsoon patterns, damaging the ozone layer, increasing global conflicts, and – most unacceptable of all – giving political cover for fossil fuel industries to continue polluting rather than cut greenhouse gas emissions.

Fossil Fuels

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

Environmental News Bits

AUGUST 4, 2021

Plug gaps to measure ozone-destroying chemicals and greenhouse gases and verify compliance with Paris and Montreal treaties. Read the full story at Nature. Read more →

Ozone

Greenbuilding Law

AUGUST 7, 2022

As governments enact mandatory greenhouse gas emission laws and as businesses voluntarily make “net zero” pledges, we are increasingly working with organizations, first to understand and calculate their GHG emissions, then to implement strategies for efficacious yet frictionless reductions. Air conditioning and refrigeration.

Greenhouse

PA Environment Daily

OCTOBER 4, 2023

Environmental Protection Agency’s GreenChill Program recognized 12 food retail companies and one manufacturer of advanced refrigeration systems for their exceptional achievements to reduce the use of ozone-depleting substances and/or climate-damaging refrigerants. For more information, visit EPA's GreenChill Program webpage.

Ozone

Union of Concerned Scientists

NOVEMBER 28, 2023

For example, EPA rules limiting ozone pollution or carbon from power plants move the first lever, while the combined $1.25 billion funding from the Inflation Reduction Act (IRA) and Bipartisan Infrastructure Law are clear examples of the latter. These programs center agencies–whether state, local, territory, or tribal–as the target.

Government

Clean Energy Law

NOVEMBER 25, 2019

The Basin does not meet the state or federal ambient air quality standards for ozone and particulate matter, and existing regulations have to date proved insufficient to bring the Basin into compliance. The SCAQMD is the local agency responsible for attaining these clean air standards in the Basin. Facility-Based Mobile Source Measures.

Ozone

PA Environment Daily

JANUARY 21, 2022

million in Alternative Fuel Incentive Grants (AFIGs) to 18 cleaner fuel transportation projects statewide that will reduce greenhouse gas emissions and other air pollutants. Transportation generates 47 percent of nitrogen oxide emissions in Pennsylvania, contributing to the formation of ground-level ozone.

Nitrogen Oxides

Greenbuilding Law

OCTOBER 8, 2023

The de riguer environmental imperative of responding to the immediate threat of global warming through reducing greenhouse gas emissions, to the detriment of other environmental impacts, is simply taking one environmental impact too far. This is not my perspective alone.

Climate Change

PA Environment Daily

MARCH 11, 2022

. -- Air pollutant reductions and human-health improvements – the DEP Electric Vehicle Roadmap indicates that a number of Pennsylvania counties consistently exceed EPA human-health standards for ozone and fine-particulate matter. The burning of transportation fuels, such as gasoline and diesel, is a substantial source of air pollution.

Electricity

Legal Planet

SEPTEMBER 21, 2023

And third, in a few key design elements it is modeled on the provisions to cut CFCs in the Montreal Protocol – the only international environmental regime that has achieved a socio-technical transformation of remotely the scale required for greenhouse gases. Targeting fossil fuels not emissions.

Fossil Fuels

Ocean Conservancy

SEPTEMBER 8, 2023

Some in the industry see the warming as an opportunity, as passages through the Arctic open for longer periods, even going so far as to claim there will be lower overall greenhouse gas (GHG) emissions from the shorter voyages.

Ocean

Washington Nature

OCTOBER 25, 2022

1 allowance = 1 metric ton of greenhouse gas (GHG) emissions. A key critique of California's Cap & Trade program has been that it hasn’t reduced health-harming criteria pollutants , including carbon monoxide, lead, nitrogen dioxide, ozone, sulfur dioxide, and particulates. What are allowances + offsets? Download the CCA Fact Sheet.

Carbon Monoxide

A Greener Life

FEBRUARY 9, 2022

This is replacing the traditional hydrofluorocarbons which have been found to damage the ozone layer. Total greenhouse gas emissions could reach 1.028 million tonnes of CO2 equivalent throughout the preparation and post-Beijing Games in 2016-2022, and about a third less than the 1.6

Renewable Energy

PA Environment Daily

SEPTEMBER 30, 2023

Shapiro’s Work Group Concludes A Cap-And-Invest Carbon Pollution Regulation Program Would Be Optimal Approach To Reducing Greenhouse Emissions From Power Plants; Scale Up Solar Energy [PaEN] -- AP: Gov. 1-7; PA Climate Convergence Oct. 23-24 In State College [PaEN] -- PA Forestry Assn.

Natural Gas

Real Climate

MAY 12, 2021

The CPDW is thought to be affected by the shift in the westerly winds around Antarctica which have increased in recent decades due to a combination of greenhouse gas forcing and the polar ozone hole ( Miller et al, 2006 ). 2020) or Sadai et al.

Sea Level

PA Environment Daily

FEBRUARY 28, 2023

It also helps lower the level of carbon dioxide, one of the greenhouse gases heating up the climate, in the air. Gasoline and diesel vehicles generate 47 percent of nitrogen oxides emissions in Pennsylvania, contributing to ground-level ozone.

Nitrogen Oxides