A coalition of scholars across the West is urging the federal government to partner with the National Academy of Sciences to study the future of the Colorado River, including if climate change is leading to reduced stream flow.

Climate change is happening now. We are already experiencing more extreme weather, higher temperatures, drought, flooding, and rising sea levels across the United States.

As the state’s energy officials continue to sift through a final federal rule to curb carbon emissions, Attorney General Mark Brnovich has already decided the rule itself is unlawful and has asked the Environmental Protection Agency to stay its implementation.

Gov. Doug Ducey said Thursday he’s convinced the climate is changing. But he doesn’t necessarily believe it is caused by anything that he or anyone else is doing.

Although the Arizona Legislature and governor continue to outright deny or completely ignore the impacts of climate change, the news for Arizona is not good.

If generally accepted predictions of global warming come to pass, Arizona’s transportation system will have to adapt due to stronger dust storms, snowfall, flooding, forest fires and other factors, experts say.

WASHINGTON – Arizona is the 12th-most energy-efficient state in the nation this year, the same position the state held last year, according to rankings released Wednesday by the American Council for an Energy-Efficient Economy.

WASHINGTON – For every dollar the government spends preventing wildfire damage, it could save cash-strapped agencies like the Forest Service another $5 on fighting increasingly large fires, a Senate committee was told Tuesday.

When the Curiosity Rover collects soil from the surface of Mars, data from the samples will come to an Arizona State University laboratory to be compared with the composition of soil on Earth.

State climatologist takes conciliatory stance on global warming

At a rally to raise awareness of climate change, Nancy Selover demonstrated the delicate balance she has to strike as both a political appointee and a scientist.