Add Yahoo as a preferred source to see more of our stories on Google. On New Year's Day, several people messaged me to ask if I had noticed how bad the air quality was in Phoenix after the previous ...

For years, the Environmental Protection Agency has assigned a dollar value to the lives saved and the health problems avoided through many of its environmental regulations. Now, that has changed. The ...

A Republic reader is concerned about the effects of air pollution on children, and wants to know how to push for change.