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The xAI data center, Colossus II, in Memphis, Tennessee, just north of Southaven, Mississippi. (Brad Zweerink / Earthjustice)
case April 14, 2026

Illegal Pollution from Data Center Power Plants Shouldn’t Harm Our Communities. We’re Suing xAI.

The lawsuit explains that xAI is illegally operating 27 gas turbines without an air permit in Southaven, Mississippi, effectively building a power plant for its Colossus 2 data center, which powers the company’s chatbot, Grok.

Deadly fine particulate matter pollution, also known as soot, comes from tailpipes, smokestacks and industrial power plants. Breathing soot can cause premature death, heart disease, and lung damage. (Chris Jordan-Bloch / Earthjustice)
Press Release April 14, 2026

Coalition Sues Trump EPA for Failure to Implement Life-Saving National Soot Standard

EPA fails to implement its own strengthened air quality standard and missed deadline for identifying areas with soot pollution levels higher than the new acceptable limit

document April 14, 2026

Motion for Summary Judgment: NAAQS Soot Standard

Seventeen health, community and environmental groups filed a lawsuit against the Environmental Protection Agency for failing to implement the strengthened 2024 National Ambient Air Quality Standard (NAAQS) for soot. The coalition also filed a motion for summary judgment asking the court to put the agency on a court-ordered deadline to carry out its overdue responsibility.

document April 14, 2026

Lawsuit filing for EPA Failing to Implement NAAQS Soot Standard

Seventeen health, community and environmental groups filed a lawsuit in the U.S. District Court for the Northern District of California against the Environmental Protection Agency for failing to implement the strengthened 2024 National Ambient Air Quality Standard (NAAQS) for particulate matter air pollution, commonly known as soot.

Press Release April 2, 2026

EPA Sets Long-Needed Updated Air Toxics Standards for Chemical Manufacturers, but Punts on Ethylene Oxide Emissions Limits

EPA’s rulemaking allows 33 highly toxic sources to continue emitting carcinogenic ethylene oxide without limits

The Cheswick Generating Station in 2010. Prior to the Mercury and Air Toxics Standards, oil-burning and coal-burning power plants largely avoided restrictions on emissions of hazardous air pollution. (Chris Jordan-Bloch / Earthjustice)
Press Release March 30, 2026

Coalition Sues Trump EPA Over Illegal Repeal of Mercury and Air Toxics Standards

Lawsuit challenges rollback that allows more mercury, lead, and other toxic pollution from coal- and oil-fired power plants

document March 30, 2026

Mercury and Air Toxics Lawsuit Filing

A coalition of public health, environmental, and community advocates filed a lawsuit challenging the Trump administration’s repeal of standards that limit brain-damaging mercury, lead, and other hazardous air pollution from coal-fired power plants.

Press Release March 26, 2026

Maryland Latest Site For Rapid and Reckless Expansion of Immigration Detention

Local groups submit amicus brief to prevent further construction on retrofitting warehouse

Press Release March 26, 2026

Nuevo Lugar en Maryland Para Rápida e Imprudente Expansión de Detención de Inmigrantes

Grupos locales presentan escrito de amicus curiae para impedir la construcción de un almacén en proceso de reacondicionamiento

document March 26, 2026

Hagerstown Detention Center: Amicus Brief

A coalition of environmental and community organizations, represented by Earthjustice and the Center for Biological Diversity, filed an amicus brief in the State of Maryland’s case to stop a proposed mass detention facility in Hagerstown.

The shift to state-of-the-art appliances in homes, such as induction stoves, offers major clean air benefits, upgrades in energy efficiency, and climate protections. (Matt Roth for Earthjustice)
Press Release: Victory March 26, 2026

Court Upholds Montgomery County’s All-Electric Building Code

Federal ruling affirms state authority to cut pollution, lower energy costs, and advance healthier buildings

document March 25, 2026

Ruling/Memo: Montgomery County, Md. Energy Policy and Conservation Act

The U.S. District Court for the District of Maryland rejected Washington Gas’s challenge to Montgomery County’s Comprehensive Building Decarbonization Ordinance

Press Release March 24, 2026

EPA Hands Phoenix an Ozone Pollution Waiver

Residents in the Phoenix area will continue to be exposed to dangerous ozone air pollution with this free pass

Clean Air Laredo Coalition and Rio Grande International Study Center rally in front of Midwest Sterilizer facility in Laredo, TX. The facility ranks among the most polluting facilities in the nation of ethylene oxide emissions. (RGISC)
Press Release March 16, 2026

EPA Yields to Industry in Air Pollution Rule for Chemical Manufacturing Plants

The final rule leaves communities around these facilities vulnerable to dangerous, cancer-causing air pollutants

Press Release March 13, 2026

EPA Bows to Corporate Polluters, Abandons Duty to Protect Public from Sterilizers’ Ethylene Oxide Emissions

More than 14 million people in the US live near sterilizer facilities that emit one of the most toxic air pollutants regulated by the agency

The coal fired power plant looms over the town of Colstrip, Mont. Montana’s Colstrip power plant is the largest emitter of toxic particulate matter of any plant in the country’s aging coal fleet. (Louise Johns for Earthjustice)
Press Release February 20, 2026

EPA Dismantles Protections for Mercury and Air Toxics From Power Plants

Advocates warn of more toxic pollution, asthma attacks, and premature deaths, especially in communities living near coal plants.

A man cools off under a sprinkler provided by the Chicago Fire Department during hot weather in the city on June 22, 2025. (Nam Y. Huh / AP)
Article February 18, 2026

Climate Change Is Hurting Her Patients. Trump’s Latest Move Will Make It Worse.

The administration’s repeal of the ‘endangerment finding’ limits the ability to protect Americans from dangerous climate pollution. Earthjustice is suing.

Press Release February 17, 2026

Health and Safety Protections Against Chemical Emergencies Eliminated and Weakened in New Trump EPA Proposal

The agency is proposing to dismantle safeguards that were designed to protect public health, workers and the environment