text: Report: Amount of fine-particle pollution drops significantly LOS ANGELES - Concentrations of one of the most dangerous air pollutants have declined in most of the country in the last five years, especially in Southern California and the Southeast, according to a report released by the US Environmental Protection 
inputs: Report: Amount of fine-particle pollution drops significantly LOS ANGELES - Concentrations of one of the most dangerous air pollutants have declined in most of the country in the last five years, especially in Southern California and the Southeast, according to a report released by the US Environmental Protection 