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.

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.

KUNC Investigative Reporter Scott Franz talks with Morning Edition Host Nikole Robinson Carroll about potential solutions to air quality concerns being raised in Northern Colorado.