11.   But the change also could leave many of us paying higher bills and breathing more polluted air.

12.   But the case is also a distressing illustration of the longevity of gossip in a society where salaciousness has become the polluted air we breathe.

13.   Depending on the extent of their polluted air, some cities could have more than a decade to meet standards.

14.   Each subject spent two sessions in the so-called human exposure facility at the University of Toronto breathing either filtered air or polluted air.

15.   Governors from the Northeast, especially, have supported them, arguing that polluted air from the Midwest contributes to unhealthy air pollution in their region.

16.   High pressure stalled over Idaho will keep low clouds and polluted air trapped over the valleys of the interior West.

17.   However, smoking cigarettes still is far more hazardous than breathing polluted air.

18.   If there was one thing they understood, it was polluted air.

19.   Mexico City has long been notorious for its polluted air.

20.   Now researchers are looking to houseplants for a solution to polluted indoor air.