In South Seattle, teens collect moss to help ID air quality

Residents of Seattle’s Duwamish River Valley have long known they suffer from high levels of air pollution. Air pollution that comes from nearby heavy industry, highways and air traffic has plagued South Seattle neighborhoods.

“To the point that we have 13 years of life expectancy difference between South Park and Magnolia, for example,” said Paulina Lopez, executive director of the Duwamish River Cleanup Coalition.