Environment

Negotiators are focusing on a five-year agreement for sharing water from the shrinking river. Experts say that would provide some much-needed flexibility.

Across the Mountain West, groundwater is the unseen force keeping springs flowing, wetlands green, and desert plants alive. Now, a new interactive tool is making that hidden water easier to see.

The states with Democratic AGs argue that federal agencies are side-stepping important environmental laws to carry out the executive order.

Conservationists argue that delisting should be based on the population, genetic diversity and long-term viability of the wolves, as required under the Endangered Species Act of 1973.

In Phoenix, leaders are trying a lot of things to curb the heat— from our innovative ‘cool pavement’ program — to a campaign to plant trees and create more shade. But, here’s an idea that’s gaining steam: Depaving.

Portions of the North Kaibab Trail is set to reopen in early March. The trail remained closed after the Dragon Bravo Fire destroyed parts of the North Rim.

It's shaping up to be one of the hottest winters ever in Phoenix. And that affects gardening.

Wildfires are starting to burn more frequently in areas that also get snow. And that’s causing snowpacks to melt earlier than they typically do, especially in the years right after the fire.

There are a number of efforts around the Valley to plant more trees — both as a way to help cool the air and to provide more shade.

Established in 1924 by President Calvin Coolidge, Chiricahua National Monument is known by many as the “Wonderland of Rocks” — home to its iconic rhyolite pinnacles, which are made from volcanic ash and lava eroding over time.