Succulent in Arizona’s sky islands listed as ‘threatened’ under Endangered Species Act

Bartram’s stonecrop is a rare succulent native to southern Arizona and northern Mexico. The U.S. Fish and Wildlife Service will officially list it as threatened under the Endangered Species Act this week.


New estimates show Colorado River levels falling faster than expected

WASHINGTON - New projections show that Lake Mead and Lake Powell could reach "critically low reservoir elevations" sooner than expected, spurring experts to say that "bold actions" will be needed to change course.


Shuffle off the buffalo: Groups push to ship, not shoot, Canyon bison

WASHINGTON - A planned hunt of bison on the North Rim of the Grand Canyon this week appears to be moving forward, despite last-minute pleas by lawmakers in Colorado to move the animals there instead.


This year’s monsoon has been one of Arizona’s wettest

PHOENIX – By the end of July, Phoenix had seen 84% more monsoonal rainfall than all of last summer, and drought conditions improved in some parts of Arizona.


Valley traffic returns, carbon emissions rise as COVID-19 restrictions ease

PHOENIX – COVID-19 reduced road traffic to unknown lows, but now it’s returning in full force. After carbon emissions dropped during a year of less travel, will they return to problematic levels?


Forest Service plan to extend forest maintenance program is put on hold

WASHINGTON - Arizona lawmakers and advocates said they were "blindsided" by the U.S. Forest Service's abrupt announcement this week that it would halt negotiations on a proposed extension of the Four Forests Restoration Initiative.


Feds deal another setback to Rosemont mine by upholding jaguar habitat

WASHINGTON - Federal regulators on Friday rejected a mining company's request to reduce critical habitat for endangered jaguars in the Santa Rita Mountains on land that overlaps the footprint of the proposed Rosemont Copper Mine.


On the crawl: Why so many caterpillars are wriggling around Arizona

PHOENIX — Arizona’s wet monsoon season helped spawn thousands of plump yellow caterpillars around the state. The caterpillars now are looking for a place to become white-lined sphinx moths.


Court rejects Trump clean water rule with ‘significant’ Arizona impact

WASHINGTON - Environmental groups welcomed a federal judge's decision this week to overturn Trump-era clean-water regulations that were so narrow that many waterways in Arizona ended up being excluded from federal oversight.