PHOENIX — The Phoenix City Council on Wednesday voted to transition the entire bus fleet to zero-emission models by 2040. The transition will begin in phases, with the first part including a pause on ...

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 ...

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 ...

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.

TUCSON, Ariz. (KGUN) — Riding their bikes through Himmel Park at Cyclovia was a Sunday well spent for Michael DeSantis and his son Ben Gallaty. “When we’re not talking about other things, we’re ...

PHOENIX — Arizona lawmakers and the governor gave up the right to try to force motorists away from carbon fuels as part of a deal to extend Maricopa County’s road tax. A provision in the deal House ...

Lord Kelvin, the 19th-century British physicist who created the Kelvin temperature scale, is often quoted as having said something like “When you can measure what you are speaking about, and express ...

As climate change continues to wreak havoc, companies in Arizona are developing technologies intended to pull greenhouse gas from the air. Arizona’s unusually intense summer heat — with triple-digit ...

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 ...

The Arizona Department of Environmental Quality is looking to part the clouds of smog that crowd the Valley's skies with plans to reduce greenhouse gas emissions statewide. The ADEQ announced last ...

Arizona is at the intersection of interlocking crises. Increases in greenhouse gas emissions are rapidly intensifying climate change. Higher temperatures mean snow is melting more quickly and the ...