This guy eats trash and rolls around Cherry Creek. He’s the future.

The experimental design is one of a handful of projects meant to innovate how we clean the rivers and creeks, sparked by the Greenway Foundation's Clean River Design Challenge.

Yes, there’s more wildfire smoke in Denver today

One expert says it's a reminder to focus on our own pollution, which makes days like this even worse.

New air quality sensor technology may tell Denverites near I-70 more about what they’re breathing

Denverites want to know who is doing what about air pollution. There are a couple of new approaches to measuring it.

Colorado to adopt California’s stricter car pollution rules

The governor's order comes as President Donald Trump moves to loosen federal rules.

Denver’s got the most polluted zip code in the country? Not so fast.

Is 80216 really the most polluted zip in the U.S.?

I-70 opponents suffered a setback in court, but they’re not giving up

A federal judge declined to issue an injunction to stop the Platte to Park Hill flood control project over its connection to the I-70 widening.

Drivers in the Denver metro area produce just as much ozone as oil and gas production, according to an NCAR study

That means individual Denverites have the power to reduce ozone pollution by driving less, the authors of the study said.

Months later, companies say Denver 4/20 organizers owe nearly $40,000

Representatives of three different companies said that they hadn't been paid by the organizers of this year's enormous 4/20 rally in Denver months after the event.

Here’s why Denver isn’t blanketed in smoke from the California wildfires again

We could still see some smoke, but it'll be far less than last time.

With AC units and windows for 268 homes, CDOT asks neighbors to “pardon our dust”

CDOT and the city of Denver are setting aside $3.75 million for home upgrades as part of the mitigation for the I-70 expansion.

Wildfire smoke is choking the West but helping firefighters

Firefighters say it's helping them by containing temperatures and boosting humidity.

All the reasons the West is burning and smoke clouds Colorado’s skies

Wildfire smoke is still hanging over Denver, but it’s clearing up

As wildfires continue to burn across the western United States and Canada, Denver can't seem to catch a break from the smoke.

Denver air remains smoky as temperatures warm

Denver and Colorado are completely covered in wildfire smoke, EPA map shows

Dozens of wildfires burning in western U.S. states that sent smoke into cities from Seattle to Denver — prompting health warnings and cancellations of outdoor activities for children by many school districts.

Denver air quality remains poor under fires’ smoky haze

Rocky Flats cleanup is working, according to a federal review

A Department of Energy review found that precautions put in place after a 10-year cleanup are protecting people and the environment at Rocky Flats.

Denver’s growing pains — and drug problems — make their way into the South Platte

They're familiar Denver tensions — development, lack of affordable housing and rising drug use — and each has inevitably seeped into the river.

Air pollution violations could cost Denver oil and gas company $10,000 a day

The air pollution contributed to ozone pollution along the Colorado Front Range, according to a civil complaint. Ozone can lead to smog.

Each year, Denver street sweepers collect enough crud to fill Coors Field 9 feet deep

Street sweeping is about far more than petty fines. Denver's water and air quality depend on it.