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Avra Valley Earth Fissures Ongoing Hazard, Geologist Warns
State's latest report shows subsidence from groundwater pumping continues in Southern Arizona.
A War On Grass
Residents in southern Arizona are fighting an invasive, resilient species that threatens the Sonoran Desert way of life.
Saguaro National Park May Raise Some Fees
Park officials say increases have been authorized by National Park Service
Three Lambs Born to Bighorn Sheep in Catalinas
Two adults found dead since last release to build herd; that effort going well, state wildlife official says.
Hybrid Cars Make 'Clean Air Blue Skies' Eligibility
Six vehicles designated by state transportation officials to get plates allowing single-occupancy in HOV lanes.
Tucson's Native Seeds/SEARCH Gets New Leader
Arizonan Larrie Warren takes over food crop preservation organization with goal of expanding its mission.
Colorado River Delta 'Pulse Flow' Shows Signs of Success
Water release at Yuma dam enhances vegetation, opens waterway to Sea of Cortez for first time in half-century.
Tucson Electric Power Says It Won't Buy Coal Mine
Environmentalists urge utility to emphasize solar, other clean energy sources ahead of fossil fuels.
Parts of Pima County Under Citrus Quarantine
Presence of an insect that can carry disease found in region.
4.7 Earthquake Hit Sedona Sunday Night
Temblor centered 7 miles north of the northern Arizona town and 6 miles underground; no injuries reported.
Female Gray Wolf Wanders in Grand Canyon
Animal was first seen on North Rim earlier this month; wildlife officials confirm species.
More Bighorn Sheep Released North of Tucson
14 sheep scamper uphill to join a dozen surviving from last year's release; more coming Friday.
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.'
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.
More Bighorn Sheep Coming to Catalina Mountains
Second stage of controversial program to reintroduce animal to Tucson area.
Study Looks into Effects of Wastewater on Santa Cruz River
Sonoran Institute, local officials release initial report on water quality after recent upgrades to treatment facilities.
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