Salt River Project has partnered with Clēnera, a private renewable energy company, to bring Arizona its largest solar plant on 2,400 acres of private land northwest of Flagstaff by 2024. Read more»

Environmental groups asked a 10th Circuit panel to order an environmental impact statement for the plan to give Utah 52,000 acre-feet of water from a reservoir annually, arguing the plan was approved without taking into account how drastically drought would deplete the river. Read more»

The U.S. Department of Agriculture will spend nearly $500 million on projects to reduce wildfire risk in 11 areas in Western states, including Arizona, with funding coming from the budget, climate and taxes law that passed last year. Read more»

Around 300 people were stuck inside Catalina State Park north of Tucson after flooding blocked access to the single entrance road. State officials had to wait until the water receded before they began clearing debris with a front-loader this week. Read more»

The U.S. is urging Mexico to open up lithium exploitation to the private sector in order to make the critical mineral cheaper - though lithium rights are nationalized in Mexico and the technology to extract lithium from the Sonoran Desert does not yet exist commercially. Read more»

Pima Animal Care Center will be closed to the public through Friday as officials work to stem the contagious respiratory disease strep zoo. The shelter has experienced overcrowding nearly continuously for the past several years. Read more»

U.S. House Republicans included in the new rules for the chamber they passed this month a provision meant to make it easier for Congress to give away public lands - but advocates and critics disagree about the wisdom of such giveaways. Read more»

As the world faces yet another reckoning over energy supplies, several recent innovations aim to make 200-year-old heat pump science even more efficient than it already is, potentially opening the door for much greater adoption of the technology worldwide. Read more»

Water authorities in the Western U.S. don’t have a crystal ball, but two decades of drought and poor planning have caused the river’s biggest reservoirs to drop to their lowest collective volume since they were filled and give a clear view of the hard choices ahead. Read more»

Oro Valley's Town Council has some decisions to make involving how to spend its remaining $5.4 million in coronavirus relief money. Marana's OKing a new contract for the town manager — salary unknown. Plus more in local government meetings this week. Read more»

ExxonMobil's climate projections, made by in-house scientists between 1977 and 2003, were startlingly accurate and correctly predicted that fossil fuel burning would lead to global warming - while funding research and advertising to sow doubt about climate science. Read more»

Republican state policymakers’ efforts to boost fossil fuels by prohibiting their governments from doing business with companies that take sustainability into consideration has the potential to cost states millions. Read more»

The Pima Animal Care Center is only taking in animals on an emergency basis after a dog tested positive for highly contagious respiratory disease strep zoo. The shelter has experienced overcrowding nearly continuously for the past several years. Read more»

Water from the Colorado River covers more than a third of Arizona's total water usage, but as the state is increasingly losing access to that supply, that loss, and potential future loss, is a focal point of Arizona's state legislature. Read more»

The recently signed $1.7 trillion spending bill could accomplish what six years of IRS audits and DOJ prosecutions could not: shutting down “syndicated conservation easements” that exploit a charitable tax break meant to preserve open land. Read more»