Topography can mitigate climate impacts on saguaros, research shows

Businesses welcome, environmentalists dread end of Obama-era water rule

Fires in the Amazon: Arizona researchers determine what’s true, what’s not

Spark from machinery caused Museum Fire north of Flagstaff, Forest Service says

Millennials use technology to ensure the future of Arizona ranching and farming

Electric vehicle chargers at Grand Canyon reduce ‘range anxiety’ for park visitors

More PFAS contamination found in Tucson groundwater, but drinking water not affected


Wildlife service considers changes to habitat area for endangered Mount Graham red squirrel

Report: Using funds to keep parks open in government shutdown violated law

New rules expand hunting on most national wildlife refuges in Arizona

Upgrades to begin soon to keep Interstate 17 underpasses from flooding

Rosemont copper mine suffers another setback in decade of legal battles

50 grades of shade: Researchers find that it’s not all created equal

Phoenix light rail to expand with the defeat of Prop 105

Arizona ranked 29th in study of highway conditions and congestion

Kayenta Mine layoffs hit, as Navajo Generating Station closure looms

Environmental groups call on Arizona to close uranium mine near Canyon

For low-income Arizonans, housing vouchers don’t guarantee a place to live

With so much construction, why is affordable housing so scarce in Phoenix?

Making a home for fish in the desert takes a little help – and a lot of PVC

Extreme weather galvanizes believers of climate change but doesn’t persuade skeptics

Without federal disaster aid, states are left to fend for themselves

Big dogs may be key to protecting Arizona herds from Mexican gray wolf

Developments in disaster-prone areas mean big bucks for builders but can put homeowners at risk

Wildfire-vulnerable communities search for ways to live with growing threat

Out of sight is out of mind: Small communities struggle in the shadow of larger disasters

Monsoon madness: You say dust storm, I say haboob

Vulnerable communities adapting to ever-present threat of wildfires

The impact of Mexico’s worst mining disaster, five years later

Taliesin West added to World Heritage List after 15-year wait

Dwindling groundwater, ever-deeper wells could spell trouble for Arizonans

Arizona could make major changes to renewable-energy mandate

Federal judge halts planned open-pit copper mine in mountains south of Tucson

pollution settlement

Courts reject environmental lawsuit to block Navajo coal mine expansion

As Southwest water managers grapple with climate change, can a ‘grand bargain’ work?

Private drone hampers battle against Museum Fire, which now is 12% contained

Monsoon storms help slow Museum Fire, but raise flood concerns

Tourism tension in Instagram age: $1 billion in AZ taxes, challenges to preservation

As Museum Fire grows, neighborhoods north of Flagstaff are on edge

50 years later, Arizona still plays a big role in exploring the universe

Phoenix Sky Harbor switches to desert landscape to save water, money

‘Like the chain saw’: Drones have become a lifesaving tool for fighting wildfires

House panel OKs bills to rein in mining around Grand Canyon, elsewhere

‘Non-soon season’: Arizona’s dry heat is delaying the start of summer rains

Ducey not among governors supporting 55 mpg fuel efficiency standards

A Type 1 Colombia CH47D helicopter, which carries a water bucket that holds up to 2,800 gallons, is refueled and ready to be redeployed to the Woodbury Fire. Photo taken on June 22, 2019 by Anton L. Delgado/News21.

Arizona has had fewer wildfires than last year, but the blazes are bigger

Arizona quakes are mostly minor, but hundreds happen every year

Salt shakers: Removing brine from river water causes earthquakes along Utah-Colorado line

U.S. recyclers hope to upgrade infrastructure to end dependence on China

BLM considering restrictions on dispersed camping on fragile lands in Utah

‘A flowing stream from here on out’: Tucson using effluent to revive ‘dead’ stretch of river

Town shows its gratitude for the sacrifices of the Yarnell Hill 19

Climbing in Joshua Tree: Breaking bones and belaying friendships

Navajo, Hualapai water-rights bills get warm reception in House hearing

Critics attack Trump administration push to expedite uranium mining

Chemical retardant used to fight wildfires could pose harm, group says

Arizona Game & Fish supports ban on certain types of hunting contests

Why some tattoo artists choose vegan inks over traditional formulas

Roosevelt Lake residents ordered to evacuate due to Woodbury Fire

Corridors for cats: Conservationists work to keep jaguar populations genetically viable

Groundwater pumping diminishes streams across the country, study finds

Cameras and coexistence: Learning to live with jaguars

Environmental groups call for McSally to support climate change proposal

Coconino official urges feds to live up to responsibility to fund parks

Hearing climate change: An Arizona researcher’s quest to understand climate through sound

Podcast: Volcanic soil, old artillery shells challenge crews managing the Maroon Fire

Utah presses forward on pipeline despite strains on Colorado River

Ranchers want dams to protect against drought, but could dams worsen climate change?

Pima official defends clean-water rule that farmers blast as burdensome

On stressed Colorado River, states test how many more diversions watershed can bear

Efforts to protect butterflies, desert fish would get millions under Extinction Prevention Act

Arizona Game and Fish debates banning ‘coyote killing contests’

Excessive heat, high fuel loads in Arizona have experts predicting wildfires through fall

Timely tips for staying safe during Arizona’s monsoon season

Can the government be sued for climate change? Appeals court hears arguments

Tribal leaders, lawmakers push bill to ban mining near Grand Canyon

How the sounds around you could be a harbinger of climate change

Could climate change and lower birth rates be linked? UCLA researcher says yes

Unusually wet winter and spring pushes Arizona out of short-term drought

Power to the people: Utilities from around the U.S. pitch in to bring electricity to Navajos

U.S. court upholds ban on Mexican seafood to protect endangered porpoise

Court orders new hearing for groups trying to ban lead ammo in Kaibab

Buffelgrass Blues: Campaign kicks off in Phoenix parks to combat an invasive species

The storm grate is tested by Kuehne and Scally in a demonstration in Mesa.

‘Rock crispy treat’: Mesa students design storm-drain grate that blocks trash

Workers sort through recycled material at a facility in Phoenix.

Amid trade war, Chinese company is buying shuttered U.S. paper mills

Citrus squeeze: Pushed by development, costs, citrus shrinks in state economy

Federal appeals court orders BLM to reconsider how Chaco drilling permits impact environment

‘These are parks’: Signs of life returning to the depleted Colorado River Delta

As the Colorado River Basin dries, can an accidental oasis survive?

Final 100 miles of the Colorado highlight how badly the river is overtaxed

Dust, particle pollution disproportionately affect Latino and poor communities

Rare frog fossil sheds light on a gap in Arizona geologic record

Arizona farmers can legally grow industrial hemp, but will they take the risk?

Outside the box: One reporter’s quest to stop junk mail

Arcosanti: Grand experiment in sustainable living approaches its 50th year

String of Grand Canyon fatalities isn’t unusual, officials say, no changes planned

Bottled up: Brewers’ pitcher on a mission to cut single-use plastic

Coming clean: A snapshot of Arizona’s energy makeup

Crossroads: Ridesharing, delivery services, population boom challenge transit planners

Poll shows parents want climate change taught – what that looks like in one Arizona classroom

PodShare makes living near the beach affordable, if you don’t mind 37 roommates

Migrant medical costs, Arcosanti experiment and day care inspections

Report: Phoenix, Tucson among fastest-warming cities in nation since 1970

Arizona supports ‘Waters of U.S.’ rule change, but wants to delay enactment

Gila River

Advocacy group: Gila River is America’s most endangered

Local group, with help of 3 veterans, removes graffiti from Florence boulders

Weather conditions set Maricopa County up for better air than last year

Experts say Arizona tribes’ role in drought negotiations marks turning point for inclusion

Nogales seeks a fair deal from binational commission on costs of treating wastewater

Change to Clean Water Act would have repercussions, even in the arid West

In the land of coal, Navajo Nation looks to renewable energy

House, Senate OK Colorado River drought plan, capping years of debate

Mexican gray wolf numbers rise, but long-term viability still a concern

Sewage flowing into Nogales Wash raises concerns about water supply for both Mexico and U.S.

Virulent Newcastle disease found in Arizona chicken flock for first time

Climate experts want science embedded in local decisions

Logging by copter: Millions spent to thin forest on steep slopes of Mount Elden

Tribal leaders urge House to extend funding for water settlements

El Niño predicted to linger through summer, but what does that mean for Arizona?

The Art Resource Center recycles with an artistic twist

Gov. Ducey urges public to stay vigilant during wildfire season

Mexican engineer turning prickly pear juice into biodegradable plastic

Population of migrating monarchs dwindling, but experts say it’s not all doom and gloom

Report: Mexican gray wolf is a subspecies, keeps endangered status

Water officials press Senate on urgency of Colorado River drought plan

Workers sort through recycled material at a facility in Phoenix.

Grappling with costs, Tucson is rethinking its recycling program

Republicans blast Green New Deal, Democrats say GOP is playing politics

A bloom for the books: Rainfall, cool weather create spring wildflower spectacular

Scat party: To unlock the secrets of urban coyotes, biologists turn to poop

To finish drought plan, Colorado River water managers ask Congress for approval

Deep snow in Rockies should stave off Colorado River water crisis – for now

EPA plan to ease mercury standards raises ire of moms’ group, activists

Arizona researchers find new ways to monitor snowpack – right down to your neighborhood

Game track: Arizona, Sonora install cameras to monitor large animals along the border

Court says hunters can off-road in national forest to retrieve big game

Tribal officials worry Bears Ears cuts leave sacred spaces vulnerable

‘A treasure for humanity’: Binational group looks for inventive ways to protect Sonoran Desert

Yuma mural highlights endangered pronghorn and marsh bird unique to the Southwest

Mix of pesticide and fungicide suspected cause of bee deaths in California almond groves

Deadlines are hard to pin down in drought planning for Colorado River

Big-game hunting in Sonora boosts economy and conservation

Needed or misguided? Permanent ban on uranium mining near Grand Canyon draws mixed reaction

A timeline: Key moments in the establishment of Grand Canyon National Park

House OKs open-spaces bill that includes thousands of acres in Arizona

Sunlight for nighttime: Arizona’s largest utility plans to expand battery storage

100 years: Grand Canyon National Park celebrates the past, prepares for the future

Scientists downplay radiation threat from uranium ore stored at the Grand Canyon

Lane change: Old road recycled to build a new stretch of I-10

A CO₂ sponge: Arizona scientist working to combat rising carbon dioxide levels

Hatchery near Flagstaff undergoes $3.3 million in renovations to raise trout in the desert

Senate OKs open-space bill, reviving Land and Water Conservation Fund

$300,000 down the drain: Rubber ducky, grease and currency clog treatment plant, cost taxpayers

Officials testify on climate change’s outsized effect on Indian Country

45-mile walk shows solidarity against mine planned under land tribes consider sacred

Dolphins in the desert: Can they be properly cared for in Arizona?

West Nile virus now is a permanent part of Arizona’s ecosystem, study finds

Grand Canyon, other parks, to be reimbursed for funds spent in shutdown

‘Done’ isn’t done: What’s happening with the Colorado River drought plans?

Clean-water permits take longest in Arizona, study of Southwestern states says

Bald eagle web cam at Lake Pleasant captures real-time drama of survival

Late push for Salton Sea improvements complicates Colorado River drought plan

Number of Arizonans who see climate change as ‘serious problem’ jumps

Arizona lawmakers agree on crucial drought contingency plan

Despite gaps in science, cloud seeding embraced by some water managers

Waste Management Phoenix Open finding creative ways to remain ‘greenest show on turf’

How Arizona national parks survived the longest government shutdown in U.S. history

From ‘green blob’ to majestic sentinel: The science of saguaros

Central Arizona Project supports draft legislation for drought contingency plan

Arizona Corporation Commission adopts first rules to encourage electric vehicles

Drought hangover: ‘OK’ snowpack in Colorado won’t be enough to replenish reservoirs

Arizona mom joins activists protesting Wheeler nomination to head EPA

Arizona’s drought plan faces several obstacles, and time is just one of them

Shutdown, additional requests for water could disrupt Arizona drought plan

Beetles vs. birds: What happens when fighting nature with nature backfires?

Future for Mexican solar seems bright, even under new administration

Officials hopeful ‘fire funding fix’ helps tame brutal wildfire seasons

Nonprofit shop is a hub for Tempe cycling community – and a recycling project

Food insecurity a challenge for nearly half of college students in the U.S.

Additional carcinogens prompt changes at groundwater plant at Tucson Superfund site

With deadline looming, can Arizona Legislature agree to complex drought plan?

Save water, drink beer: Camp Verde collaboration swaps corn for barley

Filling bellies and landfills: Meal prep kits are convenient, but at a cost

Tree rings give clues as to how climate change could shift drought in the Sonoran Desert

Profits and flames: Private firefighters an option for the wealthy

New houses, built to fire code, burned down anyway in California’s 2017 Thomas Fire

Phoenix and some companies offer options for recycling holiday lights

‘Our stories need to be told’: Grand Canyon park enlisting Native input as it marks 100 years

Hiking is for everyone, but not everyone feels welcome to hike

Rolling easy: Barriers to hiking are falling for some with disabilities

Going solo: These women find hiking alone to be empowering

Mountains around Phoenix formed by eons of pushing, pulling and hitting

Arizona, New Mexico and Sonora team up on deal to ship natural gas to Asia

Grijalva could bring dramatic shift as head of resources committee

‘Nobody wants to be told what to eat’: Rising meat consumption contributing to climate change

Yellow waste water that had been held behind a barrier near an abandoned mine is seen in the Animas River in Durango, Colorado

Scientists to look for toxic metals in Lake Powell after Gold King Mine spill

BLM OKs pozzolan mine in Skull Valley, despite public fears and opposition

Time is running short for Colorado River managers to hammer out drought plan

Top federal water official gives states Jan. 31 deadline to pass Colorado River drought deal

Barley shortage tied to climate change could have you crying in your craft beer

Move over, single-use plastics: Gilbert company makes Earth-friendly replacements

Santa Monica moonscape: Biologists consider ways to restore badly burned national recreation area

Despite fits and starts, officials optimistic a water deal is close

Arizona’s two abandoned-mine inspectors face daunting task: ‘We’re all by ourselves’

In a hole: Arizona officials lack funds to find, secure at least 100,000 abandoned mines

Population boom in West putting humans closer to devastating wildfires

Native Americans hope to protect ancestral sites threatened by multibillion-dollar copper mine

A battle beneath the waves: Purple urchins thrive, starving out red urchins used in sushi

Dewey-Humboldt Town Council condemns coyote-killing contests

Why llamas may be the key to help humans fight off the flu

Farmers, USDA celebrate demise of pink bollworm, a cotton-killing pest

Will Arizona’s saguaros survive climate change and drought?

U.S. Forest Service under fire for cutting old-growth trees in eastern Arizona

Hikers discover oldest prehistoric footprints found at Grand Canyon

After Grijalva calls for him to resign, Zinke responds with blistering tweet

Arizona Gov. Ducey to ask for $30 million in budget proposal for drought plan

As deadline looms, lawmakers push to save popular public lands fund

Dry and getting drier: Water scarcity in Southwest is the new norm, study says

Supreme Court limits ability to designate endangered species habitat

Early snowfall delights skiers, but the drought is far from over

Vaquita’s last stand: Saving the porpoise may depend on creating a legal market for totoaba

Drought, heat and urbanization putting the squeeze on Arizona lemons

More endangered California condors soon will soar above Pinnacles National Park

Vaquita’s last stand: Fishermen want to help but need to feed their families, too

Vaquita’s last stand: The struggle to save the world’s rarest marine animal

Scottsdale firefighters pitch in to battle Woolsey Fire near LA

Forest Service chief grilled over charges of sexual harassment in agency

Too many deals will make drought plan unworkable, Ducey warns

California wildfire death toll rises to 44; Arizona firefighters assisting efforts

NAU policies on composting, single-use plastics are catching on in Flagstaff

Hunters help safeguard Arizona’s deer and elk from chronic wasting disease

Costly and nasty: Failure of Prop. 127 won’t stop renewable energy push, experts say

Is the changing climate making you anxious? You’re not alone.

Prop. 127: Voters reject drastic reshaping of Arizona’s energy future

Down in the mud: Arizona researchers probe seabed for clues about monsoons

Arizona lacks vehicle idling regulations, encourages voluntary action

Grand Canyon gap: Arizona national parks need $531 million to fix roads, buildings

Court gives tribe, environmentalists new chance to fight uranium mine

Likely closure of coal-fired power plant bringing dramatic change to Navajo Nation

Grand Canyon Park superintendent reassigned while under federal investigation

Prop 127’s potential to reshape Arizona energy has electrified supporters and opponents

Why do we keep building in fire-prone areas? Money is one reason

Western wildfires will increase because of climate change, UA researchers say

Trump plan to boost Western water by easing rules worries advocates

Why there’s a legal fight to protect the native roundtail chub

Hurricane tag team of Rosa and Sergio set rainfall records for October

Thinning effort to restore ponderosa forests to their natural state inches forward

The cost of drought: Less water from Lake Mead in 2020, higher rates for consumers

‘Our fish’: Dedicated biologists scour Colorado River to help endangered species survive

U.S.-Canada trade deal gives AZ dairy farmers hope, but worries about Mexico tariffs remain

‘Somebody’s going to have to use less’: Colorado River managers grapple with drought plans

Intel, hoping to become ‘water neutral,’ funds Nature Conservancy project on West Clear Creek

Oops or Shine On? Phoenix program helps residents recycle better

Kroger to phase out plastic bags at all its grocery stores over 7 years

Water thieves, beware: This Colorado ‘water cop’ is on the case

Beach cleanups help keep plastic out of Great Pacific Garbage Patch

Hydrologists fan out across metro Phoenix to gauge flooding left in Rosa’s wake

Treatment plant battles leaking sewage pipe, heavy metals that kill key microbes

Supreme Court lets stand ban on new uranium mines around Grand Canyon

Arizona could lose millions without federal grant program for outdoor recreation

‘Love it, don’t trash it’: Freeway litter across metro Phoenix costs millions to clean up

Interior secretary’s Grand Canyon visit highlights need for funds to fix infrastructure

Off the beaten path: Crowded trails lead to frustration, unsanctioned treks

Potential buyer for Navajo Generating Station out, plant closure likely

Southern Arizona wind farm investigated after death of bat, eagle

They also serve: 4,254 volunteers keep Arizona national parks humming

Arizona’s first malt house saves water and supports local breweries

Phoenix takes steps toward a more pedestrian friendly downtown

Gray wolf faces new challenge: National Academies of Sciences review

Helium producer leases land near Petrified Forest; environmentalists worry about harm to animals, water

Grijalva, Bishop craft surprise deal to save fund for public lands

Report: Border wall hurts wildlife, people now, full wall will be worse

Democrats push back against GOP plan to change Endangered Species Act

Hopi Tribe trial to adjudicate water rights begins

Navajo group takes protest against coal-fired power plant to Manhattan

Los Angeles seeks sustainable solutions for persistent problem of homelessness

Caltech scientist uses drones to herd birds away from aircraft

China ups ante in trade war, imposes tariff that could doom U.S. paper recycling

Tapped out, or plenty to tap? Developers argue there’s more water in the Colorado River Basin

Drought, wildfires take toll on Colorado river-rafting industry

It’s not just you. The mosquitoes really are worse this year.

SunZia power lines would destroy wetlands, kill birds, opponents say

Kombucha couture: Valley designer looks to grow her own clothing

The Santa Cruz River

Santa Cruz River in jeopardy if international sewage pipe ruptures again, experts fear

Tribally owned solar power plant beats skeptics, odds on Navajo Reservation

Environmentalists want Glen Canyon Dam removed, but is that possible?

After 11 years, legal, bureaucratic battles over Rosemont Mine continue

Native American farmers plan moves to global market, greater sustainability

A year after U.S. left Paris climate pact, mayors still cling to fight

Arizona maintains thousands of water catchments to ensure healthy wildlife populations