Cadi, thanks for the great info!! I have heard that the inside air of our homes is more dangerous to your health than the outside air. However, I found it shocking that women are at a 54% higher risk to develop cancer when workign inside the home, than those who work outside of the home. When I was younger and it was a beautiful day outside, my mom would open all of the doors and windows to "air the house out." I would complain that is was too cold or too hot, but she was right! I guess it is really important to "air the house out."