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Arizona Eryngo visited by a tiny checkerspot butterfly.

A rare wildflower will be protected in 13 acres of Southern Arizona wetlands where it can still be found, after federal officials agreed to try to save it under the Endangered Species Act. The areas include La Cebadilla, just east of Tucson, where the Arizona eryngo survives in the permanently wet habitat. Read more»

The San Pedro River is at the center of two lawsuits filed by Arizona environmental groups in the hopes of better regulating groundwater pumping and livestock grazing.

The San Pedro rivers is the subject of lawsuits filed by the Center for Biological Diversity, the Sierra Club and other conservation groups. Cronkite News looks at the health of the San Pedro, one of the few undammed rivers in the Southwest. Read more»

The San Pedro River is the only gap in a 40-mile stretch of border wall between Naco, Arizona, and the Huachuca Mountains to the west.

A U.S. Army base nestled at the foot of a southern Arizona mountain range is threatening a sensitive desert waterway sometimes called America’s most endangered river, two environmental groups said in a federal lawsuit Friday. Read more»

Scott Cameron, principal deputy assistant Interior secretary for policy management and budget, talks with Buckeye Mayor Jackie A. Meck, right, before a Senate hearing on the threat that invasive species pose to water supplies in the West.

Buckeye Mayor Jackie A. Meck said drinking water is scarce enough for cities in the West – they don’t need to be competing with invasive species for it, too. Read more»

A mining operation located along the U.S. 60 between Superior and Globe. A copper mining company wants to put operations in Oak Flats, about five miles away.

Oak Flat in Eastern Arizona lies in the midst of an environmental and economic controversy. The San Carlos Apache revere the federally owned land. Environmentalists consider it a sanctuary. Climbers, hikers and campers gravitate there for recreation. And Resolution Copper covets the rich veins of ore running beneath the surface. Read more»

The Resolution Copper mine has been in the planning stages for years, and it could be years more before it gets all the approvals it needs, a company spokesman said. Supporters say the mine it could bring thousands of jobs to the Superior area.

The U.S. Forest Service has started its formal review of the environmental impact of the proposed Resolution Copper mine, but opponents charge the outcome of the process is “already pre-ordained.” Read more»

Opponents of the proposed Resolution Copper Mine in southeast Arizona, shown here at a Washington protest last summer, say that the mine would destroy Oak Flat, a site they say is sacred to the Apache. The site won a listing on the National Register of Historic Places this month.

Opponents of a proposed copper mine at the Oak Flat campground scored a point when it was listed on the National Register of Historic Places this month – but while they won the battle, they haven’t won the war. Read more»

Defense Department officials said national security has to be the primary goal of the development buffer around Fort Huachuca, that environmental protection is a 'fortunate happenstance.'

A trio of federal agencies announced this week that Fort Huachuca will be part of a program aimed at preventing land development around bases, to aid military operations while protecting vulnerable environments. Conservationists are skeptical. Read more» 1

Members of the Lake Mead Exotic Plant Management Team remove tamarisks along a stretch of the Verde River near Paulden.

A mature tamarisk, also known as saltcedar, can consume 200-300 gallons of water a day and produce up to 250 million tiny seeds annually that are spread easily by the wind. Read more»

Jean Marie Spilker, right, and Lisa Helgren keep an eye on a bald eagle next near Apache Junction as part of the Arizona Bald Eagle Nestwatch Program.

The bald eagle is no longer endangered, but government, private and tribal groups are keeping alive the Arizona Bald Eagle Nestwatch Program, which is marking 35 years of keeping an eye on nests around the state. Read more»

A young bald eagle sits in a man-made nest created by the Arizona Game and Fish Department to lure a breeding pair away from a diseased nest.

The Arizona Game and Fish Department created two artificial eagle nests along the Verde River to replace an old nest in an effort to help baby eagles survive. Although this is not a permanent solution, it has allowed two nestlings to be raised to fledglings this year. Read more»