Wildlife officials want to use helicopters to manage bighorn sheep.
Navajo would close by 2044. Sierra Club may sue to block plan.
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.
Agency says Jefferson County company improperly disposed of Ameren coal ash.
Dozens of cases of groundwater contamination from coal ash disposal facilities have been documented nationwide.
PHOENIX - A Senate panel voted Wednesday to throw additional hurdles in the path of Arizonans who want to write their own laws.
Regulators deem the project a "beneficial" reuse; environmentalists worry about possible groundwater contamination.
Environmental group says Illinois complaint a 'red flag' for Missouri