Conservationists are speaking up following the Trump administration’s plan to extend the border wall nearly 25 miles in ...

Coconino County is no stranger to fires, from the Pipeline Fire to the Schutze Fire, causing hundreds of millions in damages.

Federal plans call for 24.7 miles of new border wall between the Nogales Border Patrol Station in Santa Cruz County and the ...

Spared in the first Trump administration, Arizona's wildlife-rich San Rafael Valley is now targeted for border wall ...

The Arizona Corporation Commission may let a power plant expand without customary review, critics say. Environmentalists call ...

Founded in 1892, the Sierra Club is a national nonprofit environmental organization with approximately 2.7 million members and supporters, including more than 60,000 in Arizona. Sierra Club’s mission ...

Coal-fired power plant dust: Pollution from coal-fired power plants led to hundreds of deaths in AZ, NM, study says But Sandy Bahr, director of the Sierra Club’s Grand Canyon chapter, criticized the ...