Prove your humanity

This week on The Allegheny Front, stories about the air we breathe: neighbors of an industrial coke plant say a recent fire there has made air pollution worse in their community; a new book looks at air pollution from a global perspective. Plus, the story of a Pittsburgh environmental group that started in the 1960s with a guerrilla marketing campaign and outrage over smoky skies.

LISTEN to the episode (29:00 minutes)