In a win for environmental groups and three Native American tribes,, a federal appeals court has upheld a ruling that halted the long-controversial Rosemont open-pit copper mine in the Santa Rita Mountains about 30 miles southeast of Tucson. Read more»

Rosemont Copper's move to expand its operations in the Santa Rita Mountains south of Tucson faces a new challenge after the Tohono O'odham Nation, Pascua Yaqui Tribe and Hopi Tribe asked a federal court to block the company from grading the slopes and dumping fill material in dry washes. Read more»

Led by Center for Biological Diversity, environmental groups filed a notice of intent—a prelude to a federal lawsuit—against Rosemont Copper, arguing the company violated federal law. Read more»

I'm sympathetic to keeping mines in the U.S. where we can see them, but less on board with punching half-mile deep holes in aquifers as Tucson's water future looks brackish. Read more» 1

A "striking" succulent is one of several rare species that may yet derail the Rosemont copper mine after the U.S. Fish and Wildlife Service said the plant should receive protection under the Endangered Species Act. Read more»

Tucson mayoral candidate Mike Cease: "Climate change is the most catastrophic environmental, social and economic crisis that the human species has ever faced." Read more»

The U.S. Army Corps of Engineers suspended a Clean Water Act permit for the proposed Rosemont Mine site in southern Arizona, the latest development in more than a decade of legal challenges from tribes and environmental groups. Read more»

Joseph Morgan: "As a candidate for House of Representatives in Congressional District 2, I rejoiced to see the recent announcement of Tucson-based Diamond Ventures Phase I development of their Rocking K Master-Planned Community in the foothills of the Rincons." Read more»

A federal judge ruled Wednesday that the Forest Service "improperly evaluated and misapplied" federal law, leading to "an inherently flawed" approval of a long-controversial open-pit copper mine in the Santa Rita Mountains southeast of Tucson. Read more»

TucsonSentinel.com's Dylan Smith joined Dan Shearer of the GV News in interviewing the Pima County administrator on the radio on Friday. Read more»

Hudbay Minerals said Thursday that it has received the approved Mine Plan of Operations for the proposed Rosemont mine project, the final step in the permitting process. Read more»

A proposal for a massive open-pit copper mine in the Santa Rita Mountains south of Tucson will be back in court this month as opponents challenge permits for the project, the latest twist in the battle over the Rosemont Mine. Read more»

Tucson's Center for Biological Diversity filed suit Monday, charging that the Trump administration violated federal rules when considering the environmental effects of an open-pit copper mine in the Santa Rita Mountains about 30 miles southeast of Tucson. Read more»

Video of a endangered wild jaguar released Thursday shows a big cat that was first photographed by a trail camera late last year. Dubbed "Sombra" by Tucson schoolkids, the jaguar was captured on tape in the Chiricahua Mountains. Later in the day, officials announced the cat is a male. Read more»

A previously unknown jaguar is prowling the mountains of Southern Arizona, officials confirmed — the second documented within months and the third photographed here since 2012. The big cat was photographed by a trail camera in November in the Dos Cabezas Mountains, about 60 miles north of the border. Read more»