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On Aug. 5 2015 the EPA was investigating contamination of this old Colorado mine when it unexpectedly triggered a release of 3 million gallons of toxic waste.

Toxic Chemicals in State Recycled Less than Nationally

EPA's annual report tracks production, disposal of chemicals that harm health or environment.
New Yorker Brian Kent with his Nissan Leaf, which he's driving to all of the lower 48 states to promote electric vehicles.

New Yorker's Electric-Powered Road Trip Reaches Tucson

Brian Kent is cruising through the lower 48 states to show electric vehicles just need a place to plug in
Mount Lemmon Ski Valley, north of Tucson, in January 2012.

Ski Resorts on Federal Land Must Prove Water Supply

New Forest Service rule will affect three spots in Arizona, including Mount Lemmon.

El Niño Winds, Rain 'Scrub' Arizona's Atmosphere

State air quality director says rains, cold temperatures help purify air.

De-Icer on Northern Arizona Roads Harms Pine Trees

Coconino County, Flagstaff switch back to environmentally friendlier cinders.
Nancy Meister, president of the Yuma Audubon Society, leads a Christmas Bird Count team near Imperial Dam.

Bird Watchers Look to Arizona Skies for Annual Count

National Audubon Society enlisted citizen scientists across the country for survey.

Arizona Spotlight for the 2015 holiday season

More local StoryCorps conversations; exploring the "Xenophobia Blues"; discovering Comet Catalina, and some of the year's best stories.
Grand Canyon

US Parks Draw Record Crowds Ahead of 100th Anniversary

Visitation to 409 National Parks estimated at 300M last year, even bigger in 2016.

Wanted: Tinsel-Free Christmas Trees for Recycling

Tucson has nine locations for annual Treecycle event through Jan. 12.
Rock formations at Lake Powell, AZ

Utah Wants to Pipe Water 140 Miles from Lake Powell

86,000 acre-feet anually would supply booming area around town of St. George.
Students at the University of Arizona add their hand prints to a banner that will be displayed at the United Nations Climate Conference in Paris.

Historic Climate Accord A First Step, UA Professors Say

University of Arizona representatives say climate connects many issues
Desert scene near Escalante, Utah.

Study: Warming May Affect Microbes, Hurting Soil Fertility

Research led by NAU scientists scanned conditions in 80 dryland ecosystems around globe.

Why Did the Wildlife Cross Over the Road? To Reduce Road Kill

First wildlife overpass in state going over highway north of Tucson; more to come.
Atop Mount Lemmon, north of Tucson, remnants of wildfire.

Study: Wildfire May Double Erosion in Western Watersheds

Flagstaff, other high-altitude areas are 'hot spots' for fire-related soil problems.
UA Students for Sustainability will show their support at the United Nations Climate Conference in Paris with a banner covered with handprints from the UA community.

UA Delegation in Paris Hopes for Global Climate Accord

Students, faculty hear world leaders trying to reach consensus.
On Aug. 5 2015 the EPA was investigating contamination of this old Colorado mine when it unexpectedly triggered a release of 3 million gallons of toxic waste.

Arizona Abandoned Mine Cleanup Could Cost Billions

Group opposing state takeover of federal lands says cleanup costs would shift to states.

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