Environmental Protection Agency
Opinion: Brazil is burning, and the U.S. is either complicit or willfully naïve
Opinion: Why the zero emission vehicle standard matters — and what it means for Colorado
Colorado attorney general taking hard look at Trump administration’s clean-water regulations rollback
Democrat Phil Weiser says if the Environmental Protection Agency rolls back the Waters of the United State rule beyond a certain point, he could take legal action
In a twist, Colorado asks the EPA to lower the state’s air rating from “moderate” to “serious”
The EPA will hold a Friday hearing on whether to lower the ozone status of Denver and eight other northern Colorado counties from "moderate" to "serious"
Aurora spent $34 million on water from a toxic mine. It’s not as crazy as it sounds.
The plan to tap the aquifer above Park County's London Mine could provide a template for how thirsty cities can draw on new sources of clean water, while also cleaning up polluted mine runoff
A tiny garden in Boulder is showing signs of stress from smog. The scientist behind it is thrilled.
Four types of plants growing near the entrance to NCAR are part of a nationwide network of gardens where citizen scientists and climate researchers collect data about the impact of ground-level ozone
Denver, northern Colorado fall short on EPA clean air rules
The move was expected after Democratic Gov. Jared Polis said in March the state wouldn't ask for an exemption based on pollution drifting into Colorado from China and elsewhere
Opinion: Will Colorado’s air be OK to breathe today? We shouldn’t have to guess.
Opinion: Lakewood voters don’t deserve praise; they deserve condemnation
Controversy over Denver Water’s Gross Reservoir expansion offers a glimpse into water woes in the West
Raising the 55-year-old dam near Boulder is essential to keep a stable water supply in a changing climate, utility says. Residents insist conservation could be just as effective.
Chemical contamination from 7 Colorado coal-fired power plants found during groundwater monitoring
Local plants vow to minimize coal-ash contamination to meet new EPA rules; report finds cases much worse in other states
Opinion: Wheeler is the wrong choice for EPA and the health of Colorado
Cory Gardner, Scott Tipton bring new “good Samaritan” bill to address abandoned mines and stoke solution for $50B problem
Congress has been debating for decades how to deal with the $50 billion problem of abandoned mines across the U.S.
In wake of Gold King Mine spill, a study will be launched on mining pollution in Lake Powell
The study comes after the EPA accidentally triggered a massive release of wastewater laden with toxic metals at the Gold King Mine three years ago
Coloradans produced a record 9.3 million tons of trash last year. Only 12 percent of it was recycled.
Colorado's recycling rate has flat lined at about a third of the national average
Dozens plead with Trump administration to keep methane rules at one-and-done hearing in Denver
Opponents argued Wednesday that changing the rules would threaten people's health, worsen climate change and squander natural gas by allowing leaks to go undetected
The Trump administration is holding its only hearing on rollback of methane rules Wednesday in Denver
Nearly 125 people have asked to speak at the daylong EPA session
Here’s why more electric vehicles, including a future Subaru, may become available in Colorado — or not
As Colorado considers adopting California's electric vehicle law, auto industry calls it unnecessary and says the state is already a leader
Three years after the Gold King Mine spill there’s no fix to leaky abandoned mines. What’s the holdup?
Today, the problem of mines leaching heavy metals into bodies of water remains, for the most part, unaddressed