Tony Davis

The Tucson Democrat discloses to the Star the type of cancer he received chemo and radiation for, and says he hopes to return to his D.C. office soon.

The study from a United Nations-based group found that most major U.S. cities also have a long path ahead to reach environmental and economic sustainability.

Among them: Reliability of computer modeling, quality of enforcement, potential for fine particles to damage kids' lungs, and concerns about lead and sulfur emissions and a sulfuric acid plant at

The New York City-based Water Asset Management LLC bought about 13,000 acres of farmland in the McMullen Valley Basin in La Paz County west of Phoenix. The basis is one

The Arizona Department of Environmental Quality approved a key permit Thursday for the Copper World Mine in the Santa Rita Mountains, saying it is aimed at insuring mine discharges don’t

Gov. Katie Hobbs heard Willcox Basin residents plead for legislative or executive action to crack down on rural groundwater pumping in a depleted aquifer.

Tucson had 78 days this summer with temperatures of at least 100 degrees — 23 days more than normal. The city experienced 38 days in the summer of at least

But Hudbay Minerals Inc. says it will work with county officials to mitigate dust stirred up by its vehicles travelling a 7.7-mile dirt road.

Voters can decide between two radically different philosophies over how to manage utilities and energy use in Arizona.

Trump's call for up to 100% tariffs on Mexico would hike US prices, experts say