More Arizona Science Stories

UA Mineral Museum Receives Its Largest Donation Ever

The collection will help create database used for non-destructive sampling technology.

Border National Monument is Center of Conflict

Organ Pipe Cactus Park has sparked issues among Border Patrol, ecologists, visitors.

Yarnell Fire 100% Contained

U.S. Forest Service said the blaze that killed 19 Prescott firefighters ceased late Wednesday night.

Yarnell Residents Expected to Return Home Monday

Nearly 130 homes, structures were destroyed; 19 firefighters died in the deadly fire.

Monsoon Causes Flooding in Flagstaff

Nearly 1 inch of rain falls in 15 minutes; more over 3-hour span, plus big hailstones.

Nearly 130 Homes, Structures Destroyed in Yarnell Fire

Earlier estimates ranged from 50 to 250, officials obtained better number after getting a closer look at the scene.

Deadly Wildfire Continues Out of Control

Blaze that killed 19 firefighters has 'high' potential for growing beyond its 8,400 acres, officials say.

Demographics Changing for Migrant Deaths in the Desert

Report shows more people from Central America crossing into the U.S.

Wildfire on Mount Lemmon Burns 200 Acres

Blaze possibly caused by lightning Sunday evening continues to grow on site of Aspen Fire of decade ago.

Prescott in Mourning: 19 Firefighters Killed

1,000 jam auditorium for memorial; tears, eulogies, prayers, moment of silence mark Sunday's tragedy.

'Excessive Heat' Warning Remains in Effect in AZ

Temperatures to 116 Sunday, with limited outdoor activity advised; monsoon coming, but not soon enough.

Signs Point To Early Monsoon Rains

Forecaster predicts moisture will come not long after season's official start Saturday, similar to 2012.

Future of Colorado River Discussed

Another dry year, more stress on dwindling water supply

Patagonia Wildfire 75% Contained

Mop-up beginning; flames no longer spreading

Ten Years After the Aspen Fire

Mount Lemmon recovering slowly from historic wildfire

Condor Reintroduction Faces Setbacks

7 deaths since Dec.; lead poisoning to blame for some

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