DAY ONE: THERE'S A LOT OF DEATH OUT THERE

A yearlong Pittsburgh Post-Gazette investigation has found that air pollution problems in western Pennsylvania remain far from being solved. A yearlong Pittsburgh Post-Gazette investigation has found that air pollution problems in western Pennsylvania remain far from being solved.

DAY TWO: 'CLUSTERS' OF DEATH

Throughout the region are neighborhoods where residents report "clusters" of death they blame on pollution. But they remain frustrated by the lack of government review. Throughout the region are neighborhoods where residents report "clusters" of death they blame on pollution. But they remain frustrated by the lack of government review.

DAY THREE: NO FEAR OF PENALTIES

Many of Western Pennsylvania's 16 coal-fired power plants have operated for months and even years in violation of their air or water pollution permits and paid relatively small penalties, the Pittsburgh Post-Gazette found in a review of state and federal data. Many of Western Pennsylvania's 16 coal-fired power plants have operated for months and even years in violation of their air or water pollution permits and paid relatively small penalties, the Pittsburgh Post-Gazette found in a review of state and federal data.

DAY FOUR: WE ALL LIVE DOWNWIND

The airborne transport of nearly invisible particles from power plants in Ohio and West Virginia are significant contributors to air quality and public health problems in western Pennsylvania. The airborne transport of nearly invisible particles from power plants in Ohio and West Virginia are significant contributors to air quality and public health problems in western Pennsylvania.

DAY FIVE: ASHES TO ASHES

Air pollution control technology is removing more and more airborne pollutants from utility emissions. But growing fly-ash disposal sites, as well as plans to dump it into water, are becoming a serious and growing health concern. Air pollution control technology is removing more and more airborne pollutants from utility emissions. But growing fly-ash disposal sites, as well as plans to dump it into water, are becoming a serious and growing health concern.

DAY SIX: PICKING PARTICLES

The debate over particle pollution centers on whether smokestack pollution could be less harmful to humans than vehicle pollution. The debate over particle pollution centers on whether smokestack pollution could be less harmful to humans than vehicle pollution.

DAY SEVEN: UTILITY WORKERS

The labor union at the Bruce Mansfield coal-fired power plant in Shippingport, Beaver County, said that nearly half of the 360 workers it represents have been diagnosed with pulmonary and respiratory ailments and malignancies. The labor union at the Bruce Mansfield coal-fired power plant in Shippingport, Beaver County, said that nearly half of the 360 workers it represents have been diagnosed with pulmonary and respiratory ailments and malignancies.

DAY EIGHT: WEIGHING THE BENEFITS