If you fall asleep or can't think straight at holiday gatherings, don't blame it on the turkey (or your relatives)! Research indicates that carbon dioxide is not only a greenhouse gas, but elevated levels of it are detrimental to human health and cognition. Learn how improving your indoor air quality will increase your health and stamina during holidays.
There is an ideal relative humidity range for our health and that is somewhere between 35% and 55%. In modern life we have introduced many new sources of moisture into our homes. Daily showers, laundry, cooking and dishwashing tend to create concentrated bursts of humidity. Because conventional construction can tolerate very little increase in humidity without condensation/mold problems moisture from these sources must be mechanically sucked out of the home.
Most conventional paints and coatings emit Volatile Organic Compounds (VOCs), which can contribute to poor indoor air quality as well as to smog. This overview includes a link to a product listing of healthier low-VOC, zero-VOC, and natural paints.