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Tree rings from centuries past may help reveal a warming planet’s future

By Karen Peterson Photo: Cassidy Araiza for The Washington Post

Each specimen in a strangely beautiful “treehouse” laboratory here tells a story of resilience — from droughts and floods to catastrophic wildfires and bitter winters, some occurring thousands of years ago.

03/23/22
                                                               

Lake Powell Is in Big Trouble

By Molly Taft

Lake Powell, on the border of Utah and Arizona, is a crucial reservoir along the Colorado River, part of a system that supplies water for 40 million people in multiple states across the West. As of Tuesday, according to readings provided by the U.S. Bureau of Reclamation, the lake stood at 3,526 feet (1,074.73 meters) above sea level, or around 24% of its total capacity. That’s just 1 foot above a threshold of water outlined in drought contingency plans, which would trigger additional releases from upstream water sources. Authorities say that this month, the lake could dip below the 3,525-foot (1,074.2-meter) trigger point, part of a series of new lows the lake has been hitting since reaching its previous lowest level on record, 3,555.09 feet (1083.6 meters), in July. The image above, captured by the European Union’s Copernicus Sentinel-3 satellite in late February, shows the parched Colorado River and Lake Powell from space.

03/09/22
                                                               

In major reversal, Arizona utility regulators kill 100% clean-energy rules in the state

By Ryan Randazzo Photo: Brian Snyder

The rules appeared on the verge of passage last year when Jim O’Connor, a Republican member of the Arizona Corporation Commission, and Anna Tovar, a Democratic member, reached a compromise.

01/26/22
                                                               

New electric-car chargers in downtown Tucson meet growing need

By David Wichner Photo: Ana Beltran , Arizona Daily Star

Electric vehicle drivers will have more options to recharge while in downtown Tucson, thanks to a new bank of chargers installed by Hotel Congress that is seen as a model for other businesses.

01/14/22
                                                               

Arizona needs a truly regional power market to keep the lights on (and affordable)

By Nate Blouin

Arizona’s electric grid faces unprecedented challenges in the form of heat waves, wildfires, drought and other impacts of changing climate. These threats test the limits of our infrastructure, meaning we must adapt and innovate the power system to continue providing reliable and affordable electricity.

01/12/22
                                                               

Dam providing power to millions nears critically low water level

By Benjamin J. Hulac Photo: Bill Clark , CQ Roll Call

A federal dam in Arizona that provides electricity to millions of Americans is at risk this year of running out of the minimum level of water required to generate that power.

01/12/22
                                                               

As the Colorado River shrinks, can new technology save water on farms? The answer is complicated

By Alex Hager Photo: Alex Hager

On a warm November day in Yuma, Arizona, the desert sun is beating down on a sea of low, green fields. Here, near the banks of the Colorado River, Matt McGuire is surveying an expanse of vegetables that sprawls into the desert landscape.

01/11/22
                                                               

Absorbing Water from the Air with Hydropanels: The Next Step in Tackling Water Scarcity?

By Clarissa Wright Photo: Riccardo Mayer

The water available for each living person on the Earth is dropping every day. Yet, a huge portion of the planet’s water is in the air. To tap into this easily overlooked resource, companies have developed technologies that extract water from the air.

01/11/22
                                                               

Ducey announces historic investment in Arizona’s water future

By Shelle Jackson Photo: Meleny Gradillas

The plan would invest $1-billion to secure Arizona's water supply over the next century. Details will be included in Governor Ducey's budget proposal, to be released Friday.

01/11/22
                                                               

As the Colorado River shrinks, can new technology save water on farms?

By Alex Hager Photo: Alex Hager , KUNC

On a warm November day in Yuma, Arizona, the desert sun is beating down on a sea of low, green fields. Here, near the banks of the Colorado River, Matt McGuire is surveying an expanse of vegetables that sprawls into the desert landscape.

01/11/22