Fast, intense wildfires are making it harder for forests to recover and can change the entire ecosystem.

Nevada filed a federal lawsuit Monday challenging the Trump Administration's new rules drastically cutting the state's access to the Colorado River.

The Trump administration moved forward with repealing the Roadless Rule last week, kicking off a final public comment period ending Sept. 21.

The federal decision, which imposes steep cuts on California, Arizona and Nevada, can now be challenged in court.

As the climate warms, some mountain trees are moving higher up, while others are spreading downhill. Scientists say something inside the trees may explain why. And that split could reshape watersheds and wildfire risk.

The federal government will cut back on the amount of water for Arizona, California and Nevada after years of negotiations. They will hit cities in the Phoenix and Tucson areas the hardest.

Western cattlemen are poised to lose almost all opportunity to comment on oil and gas development underneath their property.

This comes after the U.S. Department of the Interior reportedly restricted staff from telling the public about deaths or injuries in national parks.

Environmental groups say it's a threat to National Forest lands.

On Colorado's Upper Arkansas River, a deal is boosting water for fish and rafting