As wildfires burned in California, a study by several major environmental groups estimated that climate change could mean that future blazes …
Fire destroyed or damaged 100 homes, the saw mill and a church.
PITTSBURGH — The final report from a landmark federal study on hydraulic fracturing, or fracking, found no evidence that chemicals or brine wa…
The aim: To reduce haze at 17 national parks and wilderness areas.
Environmentalists cite a population drop of more than 90 percent.
Existing forecasts "critically underestimate" risks in Southwest, new study says.
Wildlife service supervisor changed his staff's findings, records show.
A sea turtle chose a welcoming, posh beachfront, but the wrong month.
Possible ramifications loom for Rosemont Mine, Fort Huachuca.
Critics say any mitigation deal could help the mine win approval.
This Q&A with company officials covers Rosemont environmental, business, transportation issues.
Environmentalists continue to push for a coal-free plant in Tucson.
Reservoir that supplies Western drinking water is at record low level.
HJ3 Composite Technologies is working on new ways to repair water pipelines.
Beautiful lands are for sale everywhere — will they be preserved or developed?
Arizona will be hit harder than most states, a new report says.
2011 wildfire was started by a company employee.
Tucson's monsoon season started Sunday and it's only a matter of time before we get our first downpour of the season. Here's a look at some mo…
Kinder Morgan agrees to monitor the pipeline and surrounding area for 20 years and give the county $4 million.
For the first time, the state agency that operates the multibillion-dollar Central Arizona Project warns that water shortages could hit Tucson…
The Santa Cruz River hasn’t flowed through Tucson in 70 years — but some local officials would like to change that.
The monsoon — Tucson’s summer rainy season — begins Sunday, and here’s a splash of good news for our drought-stricken area: Weather experts sa…
Pima County is on the verge of acquiring a scenic 286-acre parcel in the west-side Painted Hills area that county officials have coveted for years.
A planned project for 7,000 homes and apartments in Sierra Vista now sits in legal limbo due to a judge’s ruling overturning state approval of it.
Summers are heating up faster in the Southwest than anywhere else in the country, an analysis of federal temperature records shows.