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Patagonia, Arizona and its surroundings attract thousands of tourists for birdwatching, hiking, dining and other activities.

Tucsonans: Plan for Summer Heat by Planting Trees Now

Trees for Tucson offering three trees for $15 to Tucson Electric Power customers

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 NiƱo Winds, Rain 'Scrub' Arizona's Atmosphere

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

Mountain Snowfall May Help Flagstaff's Water Supply

Two feet in mountains this week could allow city to reduce groundwater pumping.

De-Icer on Northern Arizona Roads Harms Pine Trees

Coconino County, Flagstaff switch back to environmentally friendlier cinders.

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.

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