Gov. Polis signed a bill into law on Thursday making Colorado the third state to clear a path for plug-in solar kits.

Nearly 40 years ago, professor Brian Toon taught the world to fear the climatic aftermath of nuclear war. He’s not done yet.

We’ve reached April 1, which is a key date in assessing where things stand with snow in the mountains, which then informs the likely water supply in streams and rivers later in the spring and summer. ...

The complaint comes from the consortium of universities managing the 66-year-old research center headquartered in Boulder.

The complaint comes from the consortium of universities managing the 66-year-old research center headquartered in Boulder.

The development of a data center in north Denver met dramatic backlash on Tuesday night, with hundreds of residents packing a meeting in Elyria-Swansea to

Traffic cameras show black smoke billowing across the highways, recalling earlier images from the 2022 Marshall fire.

As community resistance to data centers grows, Colorado legislators weigh competing visions on the issue.

The cuts impacted staffers engaged in both research and operations at the lab.

The kind-hearted ICU nurse shot by federal agents was my childhood best friend.

The data center boom is coming for Colorado. Lawmakers are set to decide whether to incentivize it or guard against the potential impacts.

Trump made the threat after a federal officer shot a man in the leg in Minneapolis on Wednesday.

Congressman Joe Neguse claims the move is retaliation for Colorado's refusal to release former Mesa County Clerk Tina Peters.

Congressman Joe Neguse claims the move is retaliation for Colorado's refusal to release former Mesa County Clerk Tina Peters.

Around 3,500 moose now wander Colorado. The hungry herbivores are also threatening a once-wetland-rich valley in Rocky Mountain National Park.

U.S. Department of Energy officials say name change reflects an “expanded mission” for the research hub under President Trump.

"Like I said, nothing gets in or out of the town without us knowing."

"Like I said, nothing gets in or out of the town without us knowing."

Queer-owned businesses say they are on edge and are well aware of the pattern.

A new data center campus is currently under construction in Elyria-Swansea — a neighborhood already struggling with pollution from major highways and Colorado’s only oil and gas refinery.

When millions lost power in Spain and Portugal this spring, some were quick to blame too much solar and wind power. That wasn't the cause, but the misinformation had an impact.

Aspiration is among a group of companies that provide banking and financial services, and promise to help the environment. But so far its marketing is greener than its reality.

The federal EV tax credit is set to expire on Sept. 30, luring a surge of customers to dealerships in Colorado and across the country.

The proposed rejection doesn’t stop Colorado from enforcing the plan, but it signals the federal government no longer supports the state’s approach to combat air quality and climate change.

Budget cuts to federal agencies from the Trump administration has resulted in a reduced workforce and an end to research and other projects. CPR News wants to hear from those impacted.

Deadlier weapons, more nations, autocrats in charge, disinformation and collapsing arms control — the risk of nuclear catastrophe is back.

A new World Meteorological Organization report spells the end of the world’s most famous climate goal.

Isaiah Stark died from ingesting too much sodium, the coroner found, likely due to drinking olive brine.

Local climate activists are on edge after people claiming to be FBI agents visited at least six at their homes on the same day in Greater Boston in March. Weeks later, the motivations behind these vis...

As a Denver-based fracking executive, U.S. Secretary of Energy Chris Wright honed a message on global warming: yes, it’s real, but it’s a manageable side effect of modern life.

Geothermal heat pumps, also known as ground-source heat pumps, take advantage of the Earth’s constant temperature to heat and cool homes.

Secretary Chris Wright offered his 2025 Earth Day message, which was exclusively obtained first by Fox News Digital.

U.S. Sens. Michael Bennet and John Hickenlooper are breaking rank to back the Denver-based fracking executive.