As builders learned to make more tightly-sealed houses in the 1970’s and 1980’s, indoor air quality deteriorated because the new, energy-saving designs limited the exchange of fresh air from the outside. One of the key issues builders of “green” houses face today is how to make the enclosure tight enough to minimize energy leakage, but also permeable to allow for healthful air circulation.
It may not be obvious, but the ping pong balls in the picture are demonstrating how latex mattresses help you sleep cool.
