Car emissions laws in Arizona may become less stringent if the Arizona Department of Environmental Quality decides to change the standard at a public hearing Tuesday. The Clean Car Program is the ...

New research from Northern Arizona University shows detailed CO2 emissions for the United States from 2010 to 2022.

SAN FRANCISCO – After determining several challenges of federal requirements to help Arizona clean up emissions in national parks were raised too late, the Ninth Circuit on Monday OK’d the U.S.

The state’s move to expand a gas plant without review sets a dangerous precedent, according to environmentalists. A fight over a new gas plant in Arizona is exposing the challenges of greening the ...

Although older Arizona residents and those with underlying health conditions are still being told to stay home due to the risk of COVID-19, they still must leave their homes for emissions testing to ...

Agencies and energy providers in Arizona are taking action to slow the increase in greenhouse gas emissions throughout the state. Benjamin Grumbles, director of Arizona Department of Environmental ...

PHOENIX – Arizona is receiving nearly $2 million from the Environmental Protection Agency to reduce diesel emissions, the federal agency announce Monday. The EPA is contributing $1.9 million to ...

PHOENIX — The 2020 Greenhouse Gas Emissions Inventory showed Phoenix had a 14% decrease in community-wide GHG emissions compared to 2012, the city announced this week. This is in lieu of the city’s ...

FLAGSTAFF, Ariz. (AP) — Arizona would be tasked with coming up with a plan to cut carbon dioxide emissions by about half under a proposal released Monday by the U.S. Environmental Protection Agency.

WASHINGTON – Arizona power plants would have to make the second-highest reductions in carbon emissions in the nation under new rules proposed Monday by the Environmental Protection Agency. The EPA’s ...