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Air pollution can be two to five times worse indoors compared to outside, and it’s especially concerning for children, who tend to breathe in more air than adults in relation to their body weight.

Gov. Jared Polis and top Democrats announced an agreement with the fossil fuel industry and environmental advocates to avert a ballot box fight in November. As part of the deal, lawmakers scrapped more aggressive regulatory proposals in place of two new bills, with just days left in the legislative session.

New research shows air quality gains in the U.S. have been cut by wildfire smoke. Scientists are sounding the alarm for change if the world wants to breathe clean air in the future.

A community group in Northern Colorado is raising concerns about a bill advancing in Congress that would require general aviation airports to keep selling leaded fuel indefinitely.

The American Lung Association’s new State of the Air report includes a number of Western cities among those most impacted by ozone, short-term, and year-round particle pollution. They include Salt Lake City, Boise, Albuquerque and a number of front range cities in Colorado.

This time, Colorado Sun editor Lance Benzel joins us to discuss possible new rules on lawn equipment in Denver and an update on universal Pre-K in Colorado.

New Mexico and Nevada are among at least a dozen states that have considered so-called "green amendments" to their state constitutions so far this year. The amendments are modeled after Montana's constitutionally guaranteed right to a clean environment.

When there's poor air quality in Colorado, it can be a nuisance for residents. But for some, the bad air cancels plans and changes lives.

Residents in Superior say an airport in Jefferson County where hundreds of planes still use leaded gasoline is the source of lead they are finding on their homes. The airport director is skeptical of the claims.

We caught up with our colleagues at the Colorado Sun this week to find out what stories are crossing their reporting desks. Sun editor Larry Rickman joined KUNC's Beau Baker to talk through some of the news they're following.