A rare northern jaguar known for roaming Arizona's Santa Rita Mountains was recently observed central Sonora, Mexico, evidence of continued cross-border migration for the species. Read more»

Southeastern Arizona has long been a hot spot to see migrating monarch butterflies, but the animals are now considered endangered internationally. Here's how you can help: Read more»

Rep. Raúl Grijalva asked the Justice Department to investigate a former Trump administration Cabinet member, saying he engaged in a quid-pro-quo relationship with a real estate developer, seeking campaign funds in exchange for a water permit needed for a massive housing project outside of Benson, Ariz. Read more»

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»

The Alexander Lofgren Veterans in the Parks Act was named after Alexander Lofgren, an Afghanistan veteran who was working for U.S. Rep. Raúl Grijalva when he died in a hiking accident, and became law on Monday after President Joe Biden signed it into law with the National Defense Authorization Act. Read more»

Federal officials want to greatly expand habitats for black-footed ferrets in Arizona and possibly into neighboring states, but the endangered animal, once thought extinct, still faces several hurdles, including a "need to secure the prey and secure the habitat.” Read more»

Restoring forests in areas where they once stood is an important step toward halting climate change. It helps to ensure a host of other environmental services, too, like provision of clean air and water. But without significantly increased investment in tree nursery infrastructure, the U.S. will be unable to unlock its full reforestation potential, researchers are warning. Read more»

After a years-long battle to protect the designation of stretches of the southwest as a protected habitat for the jaguar, a federal judge has ruled that the New Mexico land should no longer be protected for the largest New World cat. Read more»

In a sunset raid Friday, dozens of Border Patrol agents used a helicopter and armored personnel carrier as they raided a No More Deaths camp near Arivaca, Ariz., arresting more than three dozen people who were receiving medical care, food, water and shelter. Read more»

Border Patrol agents have once again raided the No More Deaths camp, detaining at least person Thursday at the group's permanent desert aid camp south of Arivaca. The humanitarian aid group called the raid an "escalation" from the agency after the release of documents surrounding a similar raid more than three years ago. Read more»

Prosecutors dropped the only remaining charge against Scott Warren, ending the misdemeanor case against the No More Deaths volunteer just months after the government's attempt to charge him with two felonies case collapsed in November. Read more»

A federal judge reversed the convictions of four members of No More Deaths, finding that they successfully established they were exercising "sincere religious beliefs" when they placed water and food for migrants in an Arizona wildlife refuge in 2017. Read more» 2

The second federal felony trial of Scott Warren, a No More Deaths volunteer accused of harboring illegal immigrants in Arizona's western desert in 2018, continued Wednesday with closing arguments as both prosecutors and defense attorneys worked to convince the jury before they began their deliberations. Read more»