A study by the U.S. Environmental Protection Agency (EPA) found that indoor
air can actually be more polluted than the air outdoors (read the report).
Considering that most Americans spend up to 90 percent of each day indoors, you may be experiencing indoor air pollution without even knowing it.
Today, homes and buildings are sealed more tightly to conserve energy.
Unfortunately, this seals in mold, pollen, bacteria and other pollutants. Since
the EPA ranks indoor air pollution among the top five environmental risks to
public health, there is reason to be concerned.