Readers have asked about Arizona's cleaner-burning gasoline formulas. Do they improve air quality, health and greenhouse gas ...

New groundwater research is raising serious questions about the future of rural communities in Arizona like Wenden.

More than $14 billion in clean energy investments in the U.S. have been canceled or delayed this year, including an Arizona ...

Visit the incredible remnants of a village in the Arizona desert, a national monument that demonstrates what life was like ...

NASA’s science division would bear the brunt of the blow. Its budget would be cut from $7.3 billion to $3.9 billion, with ...

Around 66 million years ago, a six-mile-wide asteroid hit Earth, triggering the extinction of three-quarters of all living ...

California’s controversial rail project is about to lose federal funding, but powerful Democrats are doubling down on their support.

More than $14 billion in clean energy projects in the U.S. have been canceled or delayed this year, according to an analysis ...

The Department of Energy’s (DOE’s) abrupt termination of 24 previously awarded projects—including four prominent ...

On a Tuesday in March, Billton Werito drove his son Amari toward his house in Counselor, New Mexico, navigating the bumpy ...

Since its launch in May 2023, Calderys has been participating in HEATERNAL, an EU-funded project working to develop a viable ...