Environmentalists continue to push for a coal-free plant in Tucson.
An Arizona chapter of the influential Sierra Club — founded in 1892 by legendary conservationist John Muir and now the nation’s largest environmental group — has come out in opposition to a controversial bighorn sheep reintroduction near Tucson.
Few qualities are more American than a zeal for fair play. That’s why, when reports emerged last spring that the Internal Revenue Service was targeting conservative groups applying for a certain tax-exempt status, fair-minded folks of all political stripes expressed outrage.
PHOENIX — State lawmakers took the first steps Tuesday to immunize the Land Department from mistakes and negligence that result in forest fires — even if that means destroyed homes and dead firefighters.
A UA doctoral graduate was honored by the White House on Tuesday for his work to provide area students with the opportunity to experience nature and conduct scientific research.
A hike, at its bare essence, is simply a vigorous venture out of the city and into the wild — a test of legs and lungs against a backdrop of scenic splendor.
A single act, done under the cover of darkness, recently turned thousands of native plants lovingly grown from seeds into little more than kindling.
Tucson Electric Power Co. is swapping a chunk of its coal-fired power generation for cleaner-burning natural gas.
The planned Rosemont Copper Mine just south of Tucson isn’t the only mining controversy in Arizona.
A coalition of local organizations gathered today at El Tiradito shrine near downtown Tucson to oppose the “border surge” amendment to the Senate immigration bill that will essentially double the number of Border Patrol agents and add fencing along the border before allowing people to adjust…
A mountain lion stays close to its deer kill in Sabino Canyon. Lions who prey on bighorn sheep will be killed, state wildlife officials say.
A pair of bighorn sheep pause on a ridge overlooking Oro Valley. A herd of bighorn sheep, which died out in the late 1990s, will be brought back to the Pusch Ridge area in November.
An already "robust" population of mountain lions in the Catalina Mountains appears to be increasing - and that could pose a threat to a planned reintroduction of bighorn sheep in the range this fall.
PHOENIX - A Senate panel voted Wednesday to throw additional hurdles in the path of Arizonans who want to write their own laws.
FLAGSTAFF - The U.S. Environmental Protection Agency has prescribed new pollution limits on three coal-fired Arizona power plants, aiming to protect the environment and air quality for wilderness areas and landmarks such as the Grand Canyon.
The Tucson City Council approved a program Wednesday to encourage shoppers and clerks, like Kathleen O'Dell at Bashas', above, to reduce bag usage. Data on bag usage also will be collected. It was far short of what Councilman Paul Cunningham had sought.
A proposal to force stores to use fewer plastic bags got sacked Wednesday.
Environmental groups want federal regulators to place a partly coal-fired power plant in Tucson under regional regulations designed to curb regional haze.
PHOENIX - If the state sells up to 1,900 acres for a massive rail yard - 74 tracks at its widest - at Picacho, it will hurt the value of thousands of acres of state trust lands to the east, a report released Monday shows.
The Sierra Club has joined an effort to get Tucson Electric Power Co. to quit burning coal at a Tucson-area power plant.