Environment

Trees can help a city cool down. But the city has let its plans for a leafy urban shade canopy wither, activists say.

“When you lose it, it’s gone. You can’t get it back.”

New Times obtained a draft of the proposed constitutional amendment. The energy initiative is affiliated with a group founded by billionaire Trump critic Tom Steyer.

Today’s technology places physical limits of what’s possible, author and professor Tom Rez says.

Tom Steyer-funded group touts health benefits of measure that would require the state’s utilities to use clean energy to generate 50 percent of electricity needs.

Phoenix officials don’t know if an “ambitious” sustainability goal will save or cost money.

It’s not free to promote Arizona’s “open for business” climate, in contrast to a dysfunctional federal government.

“Ultimately, the real issue here is that there is so much that we don’t know,” says Amber Reimondo, energy program director of the Grand Canyon Trust.

“It’s been a bit of a shock-and-awe year for us,” the organization’s new executive director said.

In a driving-centric city like Phoenix, getting to net-zero emissions could take some creativity.

“Two years ago, the Salt River wild horses were almost removed and slaughtered. Today is a great day.”

Water trucks serving New River-area communities can keep filling at Phoenix fire hydrants for a few more months.

A streak of six consecutive years of dry weather in Arizona “may be evidence of the changing climate.”

America’s newest national monument, located in Utah on Arizona’s northern border, was also the first ever proposed by American Indian tribes. Now President Trump’s administration wants to shrink it.

“Who stands to bear the risks and pay the ultimate costs are the public and Native American tribes,” said a director with the Grand Canyon Trust.

The clock is ticking for water-seeking residents in the New River and Desert Hills communities north of Phoenix.

Will water cutoff leave the North Valley communities high and dry?

University of Arizona scientists are processing data from images of Earth after their asteroid-chasing spacecraft flies by.

Three calves were dead, and investigators had a prime suspect: a lone female Mexican wolf with a failing radio collar.

The Solana solar plant has more production problems, and more air-pollution allegations, despite previous statements by officials that similar foul-ups in the past had been solved.

The U.S. Fish and Wildlife Service may survey Mexican wolf populations to find out if, in fact, these wolves comprise a distinct subspecies.