The most widely quoted statistic about air quality is this: The Environmental Protection Agency estimates that indoor air can be two- to five-times more polluted than the air outdoors. And while the EPA is responsible for cracking down on outdoor pollution -- the smog, ozone and other chemicals that spew from tailpipes and smokestacks -- protecting the air indoors is largely the responsibility of homeowners.
While many sources of indoor air are fairly obvious and well-known -- second-hand smoke, carbon monoxide and radon, to name the most prominent, and deadly -- there are more insidious, secret sources of pollution that any concerned homeowner or parent should consider. Below are some of the most surprising. For tips on reducing indoor air pollution from these and other sources, see 25 Indoor Air Quality Tips from the American Lung Association. (www.thedailygreen.com/indoor-air)
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