Arizona expected to clear over the next few days, but smoke could return

Feds reaffirm western yellow-billed cuckoo’s threatened species status

EPA unveils Western office to focus on abandoned mine tracking, cleanup

Rio Salado restoration efforts get boost with federal ‘partnership’ designation

Experts: Border wall construction may imperil sacred source of water in desert

Many Navajos face pandemic without running water, tribal members urged to ‘lift each other up’

Western states look to sewers to track next coronavirus outbreak

Colorado’s abandonment list incentivizes water users to take share, exemplifies complex policies

Proposal to protect Joshua trees from climate change proves divisive

Efforts to cool Phoenix include pale pavement coating to reflect sunlight

Fuel buildup puts Arizona communities at wildfire risk

Arizona communities at high risk during wildfire season

Comet NEOWISE draws eyes to skies for first time in thousands of years

‘Alien abductions’ of humpback chub help frame future of Colorado River

Legal challenges to border wall continue – and so does construction

Improperly disposed of PPE raises environmental concerns

Democrats climate plan signals shift toward environmental justice

Former NFL standout Chris Long helps bring Navajos much needed water

The one that got away: A look at Glen Canyon 40 years after it was filled

Central Arizona housing boom tees up opportunity for water investors

Grand Canyon businesses claw back, slowly, after 2019, 2020 setbacks

ADOT rolls out new dust detection system to help drivers on I-10

High winds, parched conditions prompt red flag wildfire warnings

Endangered Shuffle

Critical of critical habitat: Endangered turtle haven abuts border wall

San Pedro River, squeezed by growing population, is subject of two lawsuits

Cattle damage to Arizona’s Verde River spurs legal action

For now, no border wall will split Cocopah reservation along the Colorado River

Tribal leaders say border wall, other projects continue to threaten sacred, historic sites

Two Arizona tribes, advocacy group join suits over EPA’s clean-water rule rollback

In crossing Arizona’s last free-flowing river, border wall construction also erodes trust

How safe is fishing during the pandemic? Very, if you follow basic rules

Arizona afire: Crews scramble to control 11 blazes in the state

Arizona’s Bush Fire – now the largest in the country – forces evacuations

Senate OKs up to $1.9 billion a year for parks repair, land acquisition

Lawsuit seeks trade sanctions against Mexico for failing to protect endangered porpoise

University of California divests from fossil fuels, puts $1 billion into clean energy

Tribal leaders, advocates question reopening at Grand Canyon, other parks

Preliminary OK for Little Colorado dam proposals worries plan’s critics

Despite slight dip, Phoenix still ranks high for solar power in cities

Mexico changes renewable energy rules, citing COVID-19 pandemic

Amid conflict over Salt River horses, a controversial fence is finished

Limited Memorial Day reopening of Grand Canyon ‘premature,’ critics say

Opinions on water, willingness to protect it varies by region, survey finds

As if firefighting wasn’t dangerous enough, crews grapple with COVID-19

Tool shows what many know: Arizona communities at high risk for wildfire

Recycling increases in Phoenix during the pandemic

With safety measures, many Arizona parks and trails remained opened during stay-at-home order

Green burials adapt to protect ‘death care’ workers in the time of pandemic

Plan to ‘revive’ uranium mining called unneeded, unwanted by advocates

‘Borrowing from the future’: What an emerging megadrought means for the Southwest

With much of the planet on lockdown, Earth Day goes digital

Feeding sea urchins could be one way to restore the West Coast’s vital kelp forests

endangered species

Feds kill 4 Mexican gray wolves, days after announcing population gains

Dairy farmers forced to adjust their practices during COVID-19 pandemic

Myth is reality: Discovery of bald eagles nesting in a saguaro confirms longtime speculation

EPA won’t expand pollutant rule; ‘mistake’ during COVID-19, critics say

Prescott’s bid to draw more groundwater could threaten Verde River

Urban farm provides homeless shelter residents with good food and opportunities

COVID-19 fears close Grand Canyon National Park after weeks of pressure

EPA defends plan to ease compliance requirements in face of coronavirus

Why the air in metro Phoenix is fresher these days

Officials call for Grand Canyon closure to help stem coronavirus spread

Deadline to request early ballot for SRP Board election is 5 p.m. Friday

Phoenix, Gilbert restrict some activities, but most Arizona parks and trails remain open

Grand Canyon lodging, food services shuttered in face of coronavirus

Lower carbon-capture costs could entice businesses to address climate change

Climate change already is diminishing the Colorado River, U.S. researchers find

Wild horses and burros in Arizona find new homes through federal incentive program

Arizonans keep watchful eyes on bald eagles nesting near humans

As Western coal-fired plants close, who gets their water?

Activists cite rising heat deaths, pollution, fires in asking Phoenix to declare climate emergency

Man vs. mussel: Buckeye mayor testifies on threat from invasive species

Clean energy produced on Navajo land could help power Los Angeles

Verde River watershed gets a grade of C+, but that ‘actually is very good’

Hot planet: January 2020 was warmest January in 141 years of records, NOAA says

Blasting sacred sites for border wall ‘forever damaged’ tribes

UNESCO urged to protect World Heritage Site threatened by border wall construction

Why Palo Verde, the country’s largest nuclear plant, is cutting its wastewater use

Endangered species throw roadblock in path of Rosemont Copper mine

To salvage recycling, Phoenix increases solid waste residential rate by 24%

‘Perfect droughts’ were common in the past, researchers say, and could get worse

Four Corners drought in 2018 was worsened by human-caused climate change, researchers say

Scientists hope to win global competition with concrete that incorporates and reduces carbon dioxide emissions

Phoenix replacing more diesel-fueled garbage trucks with environmentally friendlier natural gas vehicles

House panel OKs bill to undo Trump changes to Endangered Species Act

Advocates: EPA’s new clean-water rules hit Arizona, Southwest hardest

Arizona in Focus: What it takes to make sure wildlife have water

A rush of blood to the head: How do grasshoppers deal with being upside down?

Feds say humpback chub has recovered to point it’s no longer endangered

Bill would prohibit transfers of some Colorado River water to central Arizona

Communities along Rio Sonora may finally get relief from 2014 toxic mine spill

Farmer handline water pipe.

Water-well metering to prevent groundwater depletion proposed in Legislature

Climate change, and our response to it, is making life harder for desert tortoises

Heat deaths continue to rise, as federal disaster relief continues to lag

Phoenix considers asking residents to donate to plant more trees

Turf battle: Hydrogels could help ASU West save water and money

Teamwork will be key to balancing the overcommitted Colorado River

Feds say tiny snail in Utah, Arizona can no longer be listed as endangered

The Colorado River is overcommitted – here’s how that happened

NASA’s search for life on Mars is joined by scientists from Arizona

Feds waived environment, other regs on 90 miles of state border in 2019

Snowbirds: Why are white pelicans wintering in Arizona?

Navajo Generating Station, coal mine face years of breakdown, cleanup

Drone on the range: Farmers take to the skies to save water and money

Trump administration’s push for U.S. uranium production opposed near Grand Canyon

Cactus juice used to make nontoxic, biodegradable plastic bags

Critics light up decision to halt planned lightbulb-effiency rules

Water for wildlife: Catchments prove lifesavers across Arizona

Damming the Little Colorado River for power projects is opposed by tribes, environmentalists

With drought plans finished, water managers pause Colorado River negotiations

Arizona volunteers plant hope for the future of monarch butterflies

Sky rivers: A new scale categorizes power of crucial atmospheric flows

Debate continues over BLM move as workers face decision deadline

Revived stretch of Santa Cruz River provides oasis for wildlife

System will study headwaters of the Colorado to gauge stream flow, soil moisture, evaporation

Climate activists call for Phoenix, cities around the world, to declare emergency

California schools must eliminate lead in water, but what about nearby homes?

Arctic to Arizona: NAU professor explains how climate change affects everyone

Historically left out of Western water talks, tribes intend to have greater influence in future

Water transfer from Colorado River to central Arizona faces stiff opposition

Arizona poll: Republicans, Democrats far apart on immigration, gun control, climate

Native Americans have the most difficulty accessing clean water, report says

Phoenix recycling will end unless rates are hiked, officials warn

Ants are experts at avoiding traffic jams, researchers find

Navajo pull backing for tribal energy company over coal mine purchases

On Virginia’s Eastern Shore, wild horses are an asset, not a headache

Pinal County’s future water shortfall leaves some developers in limbo today

SRP confirms that last day for Navajo Generating Station just days away

Leftover pumpkins feed hungry animals instead of landfills

Water from air: ASU professor’s technology produces clean drinking water around the globe

As valley fever education increases, so does the infection’s reach

Arizona recycling programs are in trouble, thanks to residential contamination

House OKs permanent ban on mining 1 million acres around Grand Canyon

Pumpkin decor attracts trick-or-treaters but also wildlife, Game & Fish warns

1 million agave: Ambitious binational restoration plan to plant agave, protect bats

Money to burn: Forest Service wildfire fund ends its year in the black

More efficient than solar panels? Rust, saltwater show renewable-energy promise

House panel OKs update to mining law; critics say it will kill industry

McSally urged to oppose Trump’s rollback of Obama fuel economy standards

Confluence photo

Arizona’s groundwater replenishment program facing an uncertain future

Climate whiplash: Four Corners residents and ranchers adapting to weather extremes

Frank Lloyd Wright house, once listed for $2.6 million, sold at auction

Safe passage sought for wildlife trying to cross busy highway in northern Mexico

Before the flood: System to predict rising water is tested in Phoenix and Flagstaff

Endangered porpoise protections falling short, conservationists and fishermen complain

Climate change will continue to scorch the Southwest, data predict

Mushroom crop in southern Arizona forests capped by dry monsoon season

‘Asthma Alley’: Long Beach ranks worst in U.S. for air quality

Utah rolls back hydroelectric power plans for Lake Powell pipeline

‘Don’t demolish – deconstruct’: Companies give new life to discarded building materials

‘Many lives at risk’: What pollution rollbacks could mean for California and Arizona

Democrats, GOP hold competing hearings on endangered species bills

‘We have to live with it’: Students demand climate action today to ensure a greener tomorrow

Vaquita marina sightings give conservationists hope for the critically endangered porpoise

Learning the ropes: Young climate activists get ready for world protest

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