American Lung Association report found that about 156 million people live in counties plagued by high levels of ozone and ...

Air pollution levels keep getting ... a heart attack.During the research period, the report says, short-term particle pollution in the US was the highest level it has been in 16 years, with ...

Air pollution levels keep getting worse for more ... problems or trigger a heart attack.During the research period, the report says, short-term particle pollution in the US was the highest level it ...