Add Yahoo as a preferred source to see more of our stories on Google. As Congress considers provisions in President Donald Trump's tax and policy bill, energy and climate research groups have been ...

"Forever chemicals," or PFAS, have contaminated the water for nearly 2 million people across Arizona, often in rural communities. Long-term exposure to PFAS is linked by scientific research to severe ...

To continue reading this content, please enable JavaScript in your browser settings and refresh this page. Arizona is experiencing a surge of investment activity in ...

To continue reading this content, please enable JavaScript in your browser settings and refresh this page. Preview this article 4 min A new report says Arizona added ...

A closely watched matchup between Democrat Katie Hobbs and Republican Kari Lake may help determine how Arizona pursues renewable energy and utilizes federal money. For a state with bountiful solar ...

The Arizona Department of Environmental Quality has OK'd a clean air permit for a southern Arizona mine that allows construction to move forward, but critics say it's not stringent enough. Australian ...

Voters in the Salt River Project district handed clean-energy candidates a decisive majority on the board of Arizona’s largest utility, a result that could redirect how power is generated and priced ...

The economic news coming out of Washington these days is enough to confuse the savviest of business owners. But let’s be clear: The dual prospect of cuts to federal clean energy investments and the ...