One of the more remarkable accomplishments in the new three-state water agreement to backstop the declining Lake Mead was California's very presence in the negotations.
But agreement delays CAP shortages by just a couple of years.
Vegetation greened up from Mexican border down to the Sea of Cortez.
A burst of new water this spring transformed the Colorado River Delta from a mud flat into a burgeoning green belt, photos and satellite images show.
Still uncertain why they are here, if climate change is a factor.
Neighbors near closed ranch are drawing from steadily declining private wells.
Studies project major future declines and some increases in birds' ranges.
They're now allowed to roam only in Eastern Arizona, southwest New Mexico.
A new federal proposal to manage imperiled Mexican wolves runs counter to what scientific advisers urged the feds to do two years ago, environmentalists say: let them run wild north to the Grand Canyon and beyond.
Scientists flying the unmanned crafts this week at Las Cienegas, near Douglas.
It's easy to disparage a neighborhood or subdivision that uses a lot more water than the average. But what do you do about it?
The far-northeast-side tract uses triple the citywide average water use.
Small businesses and curb cuts will be eligible by July.
Yep, you got it. Give people a rebate for buying cisterns or other water harvesting systems to capture rainfall for use on their landscapes or gardens without paying for that, and they're overjoyed.
But the 600 who have received them aren't actually using less water.
Its collar resembles those on endangered gray wolves, says Fish and Wildlife Service.
Authorities are trying to figure out if a wolflike animal discovered near Grand Canyon National Park is an endangered gray wolf from the Rocky Mountains or a wolf-dog hybrid.
Jack and Emily Jean Snider have hauled their own water for 30 years.
City aquifer called stable, but some worry more problems lurk in future.
Mike Bong, who lives in the Santa Rita Mountain foothills, hooks up a water tank to a spigot in the Vail area because his well at home doesn’t work. Bong says he’s been hauling water for 10 years.
While Patagonia residents and officials grapple with pollution from long-closed mines in their environs, this hard-hitting piece from the Center for Investigative Reporting takes a national look at the problems associated with abandoned mines.
In his own blog, water harvesting advocate and author Brad Lancaster tells how he was able to divert water running down his street to transform a 5-year storm during September's heavy rains into the equivalent of a 1,000-year storm's worth of water for his property. The rains came during Hur…
Agency draws flak from environmentalists for its handling of Trench Mine runoff.
Toxic heavy metals may have leached into the water during heavy rains.
Federal regulations will cut sulfur dioxide emissions 85 percent at the smelters.
The question of whether to tighten federal standards for the pollutant ozone is knocking on the door once more.
But failure wouldn’t prevent owner from getting the water permit it needs.
Opponents wonder if Hudbay is seeking to expand the proposed mine.
Bowden could grasp essence of a person in minutes, but could stick to a single subject for years.
Existing forecasts "critically underestimate" risks in Southwest, new study says.
Construction of the outlet center in Marana is set to start this week.
But developer isn't talking about its plans or whether tenants have been signed up.
Wildlife service supervisor changed his staff's findings, records show.
Possible ramifications loom for Rosemont Mine, Fort Huachuca.
Her unflagging devotion to bats will be missed, authorities say.
A declining Lake Mead could speed plans for full-scale recycling.
Environmental groups fighting a new, federally approved cleanup plan for the Navajo Generating Station say the Environmental Protection Agency is wrong to say that the new plan would clean the plant up more in the long run than an earlier plan that the agency shelved.
Navajo would close by 2044. Sierra Club may sue to block plan.
Critics say any mitigation deal could help the mine win approval.
This Q&A with company officials covers Rosemont environmental, business, transportation issues.
Environmentalists continue to push for a coal-free plant in Tucson.
Reservoir that supplies Western drinking water is at record low level.
During today's deluge, University of Arizona and world-renowned climate scientist Jonathan Overpeck posted plenty of tweets on the drought (and a few on the rains, too). The drought's not over yet after 10 days of monsoon rains, so this blog isn't being critical of Overpeck, or praiseworthy …
It's been said by some scientists that if climate change/global warming proceeds in the next 40 years as it has over the past 20 or so years, Tucson will feel like Phoenix by the mid to late 20th century.
Beautiful lands are for sale everywhere — will they be preserved or developed?
David Schutz paid $4.6 million in 1986 for 540 acres in the Tortolitas; now he will ask nearly $3 million for the parcel at auction in August.
The northern Mexican gartersnake has joined the ranks of federally protected species.
Arizona will be hit harder than most states, a new report says.
2011 wildfire was started by a company employee.
Phoenix won't run dry if the CAP runs short, official says.