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Parts of Pima County Under Citrus Quarantine

Presence of an insect that can carry disease found in region.

Arizona Hopes to Protect Breeding Bald Eagles

Game & Fish closes two dozen areas near rivers, creeks, lakes around state.

Pollutants Stay in the Air Longer During Winter

Pima County environmental officials explain the yellow-brownish haze seen in the morning sky this time of year.

Legendary Grand Canyon Conservationist, Boatman Dies at 97

Martin Litton passed away Sunday in his California home; devoted his live to preserving wilderness.

4.7 Earthquake Hit Sedona Sunday Night

Temblor centered 7 miles north of the northern Arizona town and 6 miles underground; no injuries reported.

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

Tucson Has Recycling Options for Leftover Turkey Grease, Oil

Pouring it down the drain can cause major problems.

Female Gray Wolf Wanders in Grand Canyon

Animal was first seen on North Rim earlier this month; wildlife officials confirm species.

Arizona's Largest Utility Would Oppose Energy Efficiency Changes

Corporation Commission recently drafted amendments to rules it set in 2010.

Bighorn sheep in Santa Catalina Mountains.

More Bighorn Sheep Released North of Tucson

14 sheep scamper uphill to join a dozen surviving from last year's release; more coming Friday.

Grijalva Gets Leadership Post in US House

The Tucson Democrat is now the ranking member in the Natural Resources Committee.

Public Comment Due Monday on More Flights at Davis-Monthan

Environmental assessment draft says Air Force expects no impact in the area; local group doesn't think so.

Shawnee Riplog-Peterson, curator of mammology and ornithology at the Arizona-Sonora Desert Museum, discusses the multi-state, binational breeding program involving bighorn sheep.

Bighorn Sheep Release in Santa Catalinas Closed to Public

Arizona Game and Fish spokesman says they don't want crowd control issues, there are 'animal welfare concerns.'

St. Gregory College Preparatory School is installing one of the largest solar energy systems in a Tucson school, producing 140 kilowatts of electricity.

Corporation Commission Proposes Changes to Energy Efficiency Rules

Commissioner says it is a way to keep standards realistic; outside group argues it is a gutting of a highly progressive law.

Shawnee Riplog-Peterson, curator of mammology and ornithology at the Arizona-Sonora Desert Museum, discusses the multi-state, binational breeding program involving bighorn sheep.

17th Bighorn Sheep Found Dead

Arizona Game & Fish says cause is unknown; 31 animals were reintroduced to Catalina Mountains a year ago.

Public Affairs Specialist of the Saguaro National Park Natalie Luna Rose (left) and Park Volunteer Jim Swinehart (right) talk about National Park Week and the free admissions of great national parks across the country. National Park week is celebrated Saturday April 21st through Sunday April 29th.

'Bike Ranch' Proposal Near Saguaro National Park Causes Concerns

Opponents worry construction project is too dense; proponents say it's an environmentally-friendly way of developing land.

Grand Canyon

Feds Propose More Flights Over Grand Canyon

Pilots already fly up to 57,000 trips a year, more than any other national park.

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