How to have healthier air in your home

How to have healthier air in your home
http://www.latimes.com/features/health/la-he-toxic-home27-2009jul27,0,4449703.story

"Open windows, be careful with cleaners and check housewares.  Good ventilation is probably the single most important step you can take toward making your home healthier, experts say. For the most part, the air you breathe while you're at home isn't nearly as clean as the air you breathe while you're outside (even if the outdoor air is fairly smoggy)."