To foster the Mexican gray wolves’ long term success in the Southwest, the U.S. Fish and Wildlife announced it will lift a 325-animal cap on the population according to a draft of the proposed rule published Friday. Read more» 
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The Sonoran desert tortoise has been denied endangered species status by the U.S. Fish and Wildlife Service for a second time after a 14-year battle waged by advocates to protect the “ancient, iconic species of the desert.” Read more»
Federal officials said recovery efforts for the humpback chub have been so successful that the Colorado River fish can be downgraded from endangered to threatened, but some environmentalists worry that it may be too soon to make that move. Read more»
Three environmental groups sued the Bureau of Land Management Monday to prevent fracking for natural gas and oil in more than 4,000 acres of public land near a national forest in Arizona and the state’s most important aquifer. Read more»
The Mexican gray wolf once was prevalent in parts of the Southwest, but intensive trapping and hunting had nearly wiped out the wolves by the 1970s. A program to reintroduce the wolves into the wild began 20 years ago, and the population has been growing slowly. Read more»
The wolf shot and killed by a hunter in Utah in late December was the same animal who had been spotted near the Grand Canyon — the first wolf seen in that part of Northern Arizona in 70 years. Federal officials announced the results of genetic testing Wednesday. Read more»
A hunter in Utah shot and killed a wolf in Utah on Sunday, and has said he mistook the animal for a coyote. The canine may be the female wolf recently spotted near the Grand Canyon — the first wolf seen in that part of Northern Arizona in 70 years. Read more» 2
A pair of tourists from Virginia captured the female wolf roaming the North Rim last month — with their video camera. A cross-country road trip found the two with a rare sighting: a wolf trotting alongside their car as they left the Grand Canyon. Officials confirmed that the animal is that same wolf spotted by others in the area. Read more»
U.S. Fish and Wildlife Service officials announced Friday that they've got the straight poop on an animal seen near the Grand Canyon, confirming that a gray wolf from the Northern Rockies is making a home near the North Rim. While biologists were unable to capture the wolf for testing, DNA analysis of the wolf's scat showed that she is a member of the endangered species. Read more» 3
The U.S. Fish and Wildlife Service issued an emergency permit Thursday allowing researchers to capture and conduct DNA testing on a creature seen near the Grand Canyon that resembles a gray wolf. Read more»
The U.S. Fish and Wildlife Service wants to list the New Mexico meadow jumping mouse as an endangered species and to set aside more than 6,000 acres in eastern Arizona as critical habitat for the animals. Read more»
Although eight Arizona sites are on a secret federal "watch list" of polluters who have not been subject to timely formal enforcement, the extent of air pollution in the state is clouded by poor record-keeping and bureaucratic miscommunication, a TucsonSentinel.com investigation shows. Read more»
Dust is not as harmless as it seems. The EPA lists a host of health problems it can cause, including premature death. WildEarth Guardians wants the EPA to do something about the quality of Tucson's air. Read more»
