The Trump administration moved on Aug. 12 to weaken how it applies the 45-year-old Endangered Species Act, ordering changes that critics said will speed the loss of animals and plants at a time of record global extinctions.
Three new wildfires fires contained on North Rim of Grand Canyon National Park
Because of warmer, drier weather conditions, two lightning-caused wildfires burning on the North Rim are producing an increased amount of visible smoke.
A federal judge has overturned the U.S. Forest Service's approval of plans for a new copper mine in southeastern Arizona in a decision that comes amid a larger battle across the West over the use of public lands for mining.
Tourism continues to expand in Arizona, a boon for jobs, development and tax revenue, but the growth presents challenges to preserving the natural beauty drawing visitors to the state.
An effort to return grizzly bears to North Cascades National Park is back in motion after officials announced public comment will be reopened.
On the trail of uranium ore
A group of young environmentalists are tracing the haul route of uranium ore from Canyon Mine to the White Mesa Mill near Bluff, Utah, while also meeting with indigenous leaders who are giving them a crash course in environmental action.
In a recent painting, Hopi artist Duane Koyawena commemorated firefighting and first responder efforts.
A Grand Canyon pink rattlesnake was spotted in the park for the first time this season July 19, which happened to be National Snake Day.
President Donald Trump says he will not impose quotas on importing uranium, backing away from a possible trade confrontation and breaking with a Commerce Department assessment that America's use of foreign uranium raises national security concerns.
Democratic lawmakers beat back a series of Republican amendments July 17 before advancing bills to restrict mining around the Grand Canyon and on tribal lands in Arizona and New Mexico.
The drive behind an enormous water project in southwestern Utah, the Lake Powell Pipeline, shows no signs of slowing even after the seven Colorado River Basin states signed a new agreement this spring that could force cutbacks and more conservation.
Twelve Mexican wolf pups are now being cared for and raised by surrogate wild wolf parents after successful efforts to introduce them into existing wolf litters in Arizona and New Mexico.
Under proposed new rules to the National Environmental Policy Act (NEPA), the U.S. Forest Service is hoping to streamline its environmental analysis procedures in certain circumstances while still following the requirements laid out in the NEPA.
Tribal members, environmentalists and lawmakers told a House panel June 25 that including uranium on a list of “critical minerals” opens the door to expedited mining that will put tribal lands and national parks at risk.
Authorities say Grand Canyon National Park has completed ignition operations on a prescribed fire.
It’s official: Grand Canyon National Park is an International Dark Sky Park.
A welcome surge of melting snow is pouring out of the Rocky Mountains and into the drought-stricken rivers of the southwestern U.S., fending off a water shortage but threatening to push rivers over their banks.
Phoenix Zoo officials say the first litter of endangered Mexican Gray Wolf pups has been born there in 20 years.
Kaibab National Forest employees held a morning brief May 31 on the North Rim of Grand Canyon in preparation for the 2019 fire season.
U.S. Interior Secretary David Bernhardt has agreed to put off oil and gas leasing for a year on land that Native Americans consider sacred.
Water managers are marking completion of a long-negotiated plan for 40 million people and vast irrigated farms to share crucial Colorado River water.
NPS has purchased 680.8 acres of private land within Death Valley National Park’s borders.
Increase in recreational and visitor access proposed for Paria Canyon- Vermilion Cliffs Wilderness area
BLM seeks public comments
A 45-day public comment period will run from May 8 to June 21.
A noisy geyser in Yellowstone National Park has roared back to life after three years of quiet.
One of the most exclusive and dramatic hiking spots in the southwestern United States could see bigger crowds under a new proposal unveiled May 8.