Grace Hood

As more homeowners install solar they're using less energy from their utilities, which in turn hurts their business. One utility in Colorado has forged a deal that may be a model for other states.

The former Texas governor once wanted to eliminate the Department of Energy. Perry and Donald Trump have doubted climate science, an key area of research at some of the department's 17 national labs.

After years of drought and dropping water levels, the Colorado River is reaching a crisis point. Communities at each end of the river are looking at a variety of measures, from storage to sharing.

Many cities are converting to LED streetlights. The move can help restore darker skies and make stars visible again, and they also save energy and money. But some LEDs emit light that disrupts sleep.

Synthetic chemicals have been found in Colorado water supplies. The Pentagon is examining hundreds of military sites for possible contamination by PFCs, which have been linked to health problems.

Last August, 3 million gallons of orange wastewater flooded into Colorado's Animas River, ending up in Lake Powell. But Congress has failed to come up with a way to stop this from happening again.

Climate change is affecting what visitors see in Mesa Verde National Park. Over the past decade, scorching wildfires have destroyed archaeological artifacts — and have also revealed new ones.

Who owns rain that falls from the sky? In the West, this is a topic of serious discussion and lawmaking. This summer, after much debate, Colorado will allow homeowners to use rain barrels.

Methane is a powerful greenhouse gas, and on Thursday the Obama administration laid out new regulations to stop methane leaks from the oil and gas industry. A report from Colorado explains how that state has brought methane emissions under control.

More than 100 nations will sign the climate change deal agreed to in December. It will eventually commit nealy all the world's governments to cut back on greenhouse gases that cause global warming.

When it comes to dam safety, human eyes are still one of the best tools to recognize problems — so in some areas, workers live in remote locations to watch over the water supply.

The EPA is racing to secure the site of the Gold King Mine in southwestern Colorado. This summer, the agency accidentally released 3 million gallons of orange wastewater into the Animas River.

The entrance fees at some national parks increase on Thursday. It will help with upkeep of restrooms and trails, but it's likely to be a drop in the bucket.

The U.S. Fish and Wildlife Service announced Tuesday the greater sage grouse does not need protections under the Endangered Species Act. The move is being celebrated by Western states...

When it comes to new regulations for existing coal-fired power plants, Colorado is ahead of the curve. But the state's governor and attorney general are clashing over next steps.

The Environmental Protection Agency and multiple western states are dealing with the spill into Colorado's Animas River. It was triggered by a crew of EPA contractors working at the Gold King Mine.

Colorado will need more water to supply the state's fast-increasing population. So two large reservoir projects have been proposed, but some Coloradans worry about the dams' possible ecological harm.

An estimated 3 million gallons of orange fluid that spilled from the Gold King Mine in Colorado has traveled from the Animas River in Colorado to the San Juan River in New Mexico.

Officials are drafting a statewide water plan. It's an attempt to address the water needs of a rapidly growing population and a diminishing water supply due to drought and other conditions.

Fans of Boulder County's osprey nest cam saw a bit of drama last season.

Two females and a male were living in the nest, when a third female arrived and kicked the original female out. Observers said she bonded with the male.

"People called it ... the 'home-wrecker osprey,' ...