One of the prohibited substances can cause cancer; new state law forced operators to identify chemicals.
Recently retired Colorado scientist Lisa McKenzie chased the link between fracking and adverse birth outcomes, cancer and cardiovascular disease.
Proposed rules would force operators to measure methane emissions, fix leaks and, in some cases, install gas collection systems.
Like labels on cigarettes, opponents say fossil fuel warnings could change attitudes. Others call it gasoline “shaming.”
High-tech camera reveals the pollutants spewing into the atmosphere, providing evidence for the state to investigate gas and oil operators.
Emboldened residents organize to halt Big Oil’s march toward the Rocky Mountain suburbs.
As a planned community near the Rockies rises, so do concerns over a fracking operation that would stretch under the homes.
During Colorado’s ‘ozone season,’ children and adults alike stay indoors. Drilling wells near the suburbs could make it worse.
A plan for drilling 156 oil and gas wells near a Superfund site has driven suburban residents to action.
A campaign touting the oil and gas industry’s environmental progress says its energy-producing hydrocarbons are very clean, but not all of its claims can be verified.
Fearing they may not survive the ravages of extreme weather caused by the climate crisis, island nations look to Hawaii’s ambitious policies as a model.
Oil and gas firm plans new wells near Aurora Reservoir and the Lowry Landfill Superfund site.
The closer the state gets to reaching its groundbreaking clean energy goals, the harder it will be to achieve them.
Environmentalists question the sustainability commitments made by Denver-based Civitas Resources.
Tension over energy industry oversight has sparked a rare agreement between climate activists and the oil and gas industry.
As wind energy and other cleantech projects create jobs, they meet labor shortages and community opposition.
With water use growing, arid Western states are asking for new regulations.
The plan by Extraction would have led to horizontal drilling under hundreds of acres of scenic Boulder County lands purchased with taxpayer dollars.
Effort to tighten rules on so-called forced pooling shows difficulty of reforms.
Up against a heavily Democratic Legislature, fossil fuel firms funnel cash to politicos they’ve previously ignored to win precious votes.