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Birdwatchers look at Tucson wildlife from a distance.

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.

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.

Mike Kazz, president for Grecycle, demonstrates how to turn turkey grease into fuel.

Don't Dump Grease, Cooking Oil; Recycle It with Pima County

County will take it Jan. 9 as a way to prevent clogged sewer lines.

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.

Tucson Bishop Shares Climate Change Message From Pope

As UN conference continues, Catholic Church focuses on climate change.

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.

Grand Canyon

Proposals Would Regulate Grand Canyon Backcountry

Activities in canyon currently governed by 3-decade-old management plan.

The sun sets in the Arizona desert wilderness.

AZ WEEK: Arizona Desert Wilderness Act at Milestone

A look at what it means from the perspective of federal agencies, non profit organizations

Study: Arizona Not Preparing Enough for Climate Change

Existing policies based on current climate conditions, do not reflect climate change projections

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