Commonwealth of Pennsylvania | Pennsylvania DEP issued a Code Orange Air Quality Action Day for PM2.5 on December 7, 2025, warning that stagnant conditions will elevate pollution levels across five counties and urging sensitive groups and residents to limit outdoor activity and reduce emissions.

American Heart Association Journals | A new review highlights air pollution as a major, modifiable exposomic risk factor for heart failure, detailing its biological mechanisms, links to disease progression, disproportionate impacts on vulnerable populations, and strategies for clinicians and health systems to reduce cardiovascular harm.

Stockholm Environment Institute | Air pollution, emitted alongside greenhouse gases, has caused tens of millions of deaths over the past decade and shows that failure to curb climate change is also a missed opportunity to rapidly improve public health by reducing toxic air pollutants.

West Virginia Watch | Environmental groups and local residents appealed a West Virginia DEP permit for a proposed Tucker County natural gas power plant, arguing it was improperly classified as a minor pollution source and approved using heavily redacted emissions data that prevents public understanding of its true air quality and health impacts.

WHYY | The Trump administration announced plans to roll back Biden-era vehicle fuel efficiency standards from 50.4 mpg to 34.5 mpg, a move supporters say will lower car costs but critics warn will raise fuel expenses, increase pollution, and harm public health and the climate.

NC DEQ – NC.gov | North Carolina DEQ issued a public notice for a proposed Special Order by Consent allowing Pilkington’s Laurinburg glass plant to keep operating during a Title V permit modification after repeated violations tied to NOx and CO emissions monitor downtime, with public comments due by January 2, 2026.

KTVU | Chevron was fined $900,000 after regulators found dozens of air monitors at its Richmond, California refinery were improperly configured to detect the full range of emissions, prompting further review of the company’s monitoring compliance.

The Guardian | New research shows that Monterrey’s rapid industrial boom is producing extreme levels of toxic air pollution, exposing millions of residents to dangerous heavy metals and fine particulates and creating one of the worst air-quality crises in North America.

Stanford Report – Stanford University | A new national study finds that gas and propane stoves emit enough nitrogen dioxide to raise risks of asthma, cancer, and other illnesses, and shows that switching to electric stoves could cut Americans’ exposure to this harmful pollutant by more than half.

Nature | A study found that when COVID-19 restrictions on dining out were lifted, London’s air quality worsened.

Commonwealth of Pennsylvania | Pennsylvania DEP issued a Code Orange Air Quality Action Day for PM2.5 on December 7, 2025, warning that stagnant conditions will elevate pollution levels across five counties and urging sensitive groups and residents to limit outdoor activity and reduce emissions.

American Heart Association Journals | A new review highlights air pollution as a major, modifiable exposomic risk factor for heart failure, detailing its biological mechanisms, links to disease progression, disproportionate impacts on vulnerable populations, and strategies for clinicians and health systems to reduce cardiovascular harm.

Stockholm Environment Institute | Air pollution, emitted alongside greenhouse gases, has caused tens of millions of deaths over the past decade and shows that failure to curb climate change is also a missed opportunity to rapidly improve public health by reducing toxic air pollutants.

West Virginia Watch | Environmental groups and local residents appealed a West Virginia DEP permit for a proposed Tucker County natural gas power plant, arguing it was improperly classified as a minor pollution source and approved using heavily redacted emissions data that prevents public understanding of its true air quality and health impacts.

WHYY | The Trump administration announced plans to roll back Biden-era vehicle fuel efficiency standards from 50.4 mpg to 34.5 mpg, a move supporters say will lower car costs but critics warn will raise fuel expenses, increase pollution, and harm public health and the climate.

NC DEQ – NC.gov | North Carolina DEQ issued a public notice for a proposed Special Order by Consent allowing Pilkington’s Laurinburg glass plant to keep operating during a Title V permit modification after repeated violations tied to NOx and CO emissions monitor downtime, with public comments due by January 2, 2026.

KTVU | Chevron was fined $900,000 after regulators found dozens of air monitors at its Richmond, California refinery were improperly configured to detect the full range of emissions, prompting further review of the company’s monitoring compliance.

The Guardian | New research shows that Monterrey’s rapid industrial boom is producing extreme levels of toxic air pollution, exposing millions of residents to dangerous heavy metals and fine particulates and creating one of the worst air-quality crises in North America.

Stanford Report – Stanford University | A new national study finds that gas and propane stoves emit enough nitrogen dioxide to raise risks of asthma, cancer, and other illnesses, and shows that switching to electric stoves could cut Americans’ exposure to this harmful pollutant by more than half.

Nature | A study found that when COVID-19 restrictions on dining out were lifted, London’s air quality worsened.