Border Patrol agents arrested at least eight people protecting the tree Monday morning before cutting it down, ending a months-long protest that had halted border wall construction in the area.

The Coppermine Chapter passed a resolution in August saying it unequivocally opposed the proposal to mine copper on its land. A mining company executive said the mining proposal is effectively…

Federal regulators approved South32’s Hermosa mine despite identifying adverse impacts to multiple endangered or threatened species, the suit notes.

Federal regulators approved South32’s Hermosa mine despite identifying adverse impacts to multiple endangered or threatened species, the suit notes.

Companies have staked claims for more than 100 lithium-mine projects. Tribes are among the most affected.

Under the banner of “Dig, Baby, Dig,” the Trump administration is supercharging an already powerful mining industry. What will happen to vulnerable plants and animals?

The decision allows Colorado’s largest water utility to triple a reservoir’s storage, despite concerns about diverting more water from the dwindling Colorado River.

The decision allows Colorado’s largest water utility to triple a reservoir’s storage, despite concerns about diverting more water from the dwindling Colorado River.

The Trump administration is facing a slew of major lawsuits over its cutback of the Bears Ears and Grand Staircase-Escalante national monuments to more than a quarter of their original size. A new pol...

New polling shows that two-thirds of registered voters in Utah support restoring protections for the Bears Ears and Grand Staircase-Escalante national monuments.

The move to block new mining projects comes as the Trump administration seeks to revive American uranium production.

The BLM and U.S. Fish and Wildlife Service said no Mexican spotted owls lived near a proposed mine site in Arizona’s Sky Islands when it permitted mineral exploration. Photo evidence shows otherwise.

Amid the river’s worst water year on record and deadlocked negotiations over its future, the Bureau of Reclamation announced it will impose a new 10-year management plan if the states relying on the r...

Climate change will almost certainly feature prominently in any multi-state litigation over the Colorado River. A court case over an almost-finished dam expansion may decide how.

Indigenous Xinca villagers burn plastic to dispose of it and stoke cooking fires, unwittingly exposing themselves, their children and environment to deadly pollutants. An ambitious project aims to cha...

The largest such expansion in U.S. history, it will allow access to 92 million acres across 32 states. But the final rule outlining how it will work is not yet public.

Climate change will almost certainly feature prominently in any multi-state litigation over the Colorado River. A court case over an almost-finished dam expansion may decide how.

The coal mine would disturb more than 10,000 more acres, pollute the region for more than a century and force some residents of the Navajo Nation out of their homes.

Two executive orders signed Monday afternoon slashed the size of the Utah national monuments revered by tribes and public lands advocates. Grazing, mining and drilling interests wanted them opened to ...

Federal and state governments are helping Energy Fuels boost its processing of uranium and rare earth elements, but the company has a checkered past with tribes and communities in the Four Corners reg...

The U.S. Forest Service’s sign-off allows South32’s Hermosa mine, one of the country’s biggest proposed critical mineral operations, to proceed despite vocal opposition.

Grand Staircase-Escalante National Monument has been targeted for downsizing and protection rollbacks for years. But the latest attempt to overturn its management plan in Congress has stalled.

For the first time ever, researchers have quantified the length and mass of arbuscular mycorrhizal fungal networks globally and mapped the ecosystems where they are densest.

Grand Staircase-Escalante National Monument has been targeted for downsizing and protection rollbacks for years. But the latest attempt to overturn its management plan in Congress has stalled.

Fishing groups and environmentalists say the Trump administration's latest plan to send more water to Central Valley farms threatens California salmon.

Biden’s Public Lands Rule ensured protecting or rehabilitating federal land would be as legitimate a use as mining, logging or drilling. Republicans and developers said it was a threat to the principl...

Companies have staked claims for more than 100 lithium-mine projects. Tribes are among the most affected.

The BLM and U.S. Fish and Wildlife Service said no Mexican spotted owls lived near a proposed mine site in Arizona’s Sky Islands when it permitted mineral exploration. Photo evidence shows otherwise.

During her stint in the first Trump administration, Karen Budd-Falen was prohibited from working on or even discussing grazing matters.

The EPA released its latest enforcement and compliance report and touted the agency’s crackdown on environmental crimes under the Trump administration, yet 75 percent of the criminal cases closed last...

Lake Powell, Lake Mead and the entire Colorado River system is at risk of collapse without action.

This story is published in partnership with CALÓ News, a nonprofit, community-centered newsroom uplifting Latinos in Arizona and California. Immigration arrests in Arizona more than tripled in Fiscal ...

An NPR investigation finds the public database of Epstein files is missing dozens of pages related to sexual abuse accusations against President Trump.

Experts say stifling bureaucratic procedures that are disconnected from the climate crisis have consistently stalled COP negotiations.

Though full extent of the water pinch is unknown, the state is asking municipalities to assess potential water service shortfalls.

With another federal deadline only weeks away and record-low snowfall further drying out the watershed, states have begun talking about whether they are prepared for litigation.

The Trump administration has terminated billions in clean-energy funding, while the state’s utilities commission is proposing to rescind energy-efficiency and renewables standards, as Arizona’s bigges...

A recent, non-binding opinion from the Government Accountability Office may pave the way for Congress to begin rescinding management plans for national monuments across the country, environmentalists ...