“Most people are aware of the health problems that can be caused by outdoor air pollution, but few aware that pollution in their own homes could also have an effect on their health,” says John Roberts, one of the founders of the Master Home Environmentalist program at the American Lung Association of Washington.
Roberts designed this program in 1991, along with a team of volunteers, after a study he conducted in the late 1980s for the Puget Sound Clean Air Agency indicated home air-quality levels were lower than those outdoors. ...