A hundred years ago, people spent a good portion of their day outdoors or living in buildings that tended to be drafty, providing frequent air exchange. Today, most people spend their time indoors, in a tightly-sealed environment we call the building envelope. The combination of time and lack of air exchange can lead to health issues caused by exposure to chemicals and pollutants, including particles, chemicals, mold, allergens, radon, combustion gasses, tobacco smoke and pesticides from lawn and insect treatments. These exposures can cause a laundry-list of symptoms and conditions including allergies, asthma, cancers and many other conditions that can permanently affect your health. How do you escape these health hazards? [Read more…]