American Lung Association's State of the Air ReportThe State of the Air 2010 study from the American Lung Association shows that, while air quality has improved in many places, more than 175 million Americans still suffer pollution levels that are too often dangerous to breathe. Check out http://www.stateoftheair.org/ for more info. Children, teenagers, adults over 65, diabetics, asthmatics and many others are at risk due to poor air quality.