The Interior Department is reviewing which projects it will cut and which it will keep under new policy priorities from the Trump administration.

Of all the Five C's, cattle ranching has endured with fewer changes in how things get done, but faces just as many threats to ...

Ten UC researchers and 14 alumni have been selected for one of the highest honors in the field of engineering.

Climate was an easy, low-cost product to sell in Arizona's early years, before rising temperatures changed the landscape's ...

A study published this week in the journal Science Advances makes the case that extreme heat is aging millions of Americans more quickly than their counterparts in cooler climates. The impact of ...

Minnesota’s AG called the case against environmentally responsible investing “silly. But we got to stand up and never shrink ...

Copper retains much of the luster that lent Arizona the unofficial nickname "Copper State," and is king in rural Greenlee ...

Impeachment likely won't happen, but the idea is gaining traction as Republicans question the country's typical separation of powers.

A measure to ban geoengineering in Arizona has been amended to allow cloud seeding, which has been under study for years.

Athletes from WNBA, NFL and MLB are urging sports fans to join them in protecting oceans, vital for climate stability.

This came amid reports that the Trump administration warned more than 1,100 Environmental Protection Agency employees working on climate change measures earlier this week that they could be fired ...

The new CEO of Octopus Energy US talks about clean power's future amid a hostile political environment, and why renewable energy is booming in oil-rich Texas.