A report on air quality found year-round pollution in the Little Rock metro area is getting worse, with the average level of particle pollution, or soot, in the metro area tying for the worst in the ...

More expensive cars emit lower levels of pollution—meaning that motorists owning cheaper, higher-emitting vehicles contribute disproportionately to their local urban air quality problems, a new study ...

The Erie-Meadville metro area also dropped in national rankings for clean air. Neighboring counties, including Ashtabula and Chautauqua, experienced similar declines in air quality grades. Erie County ...