On occasion, indoor air is more than 100 times more polluted! Because of this, the EPA has ranked indoor air pollution among today’s top five most significant risks to public health. Since most people spend approximately 90 percent of the time at home or at the office, indoor air quality is vitally important. The problem is pollution is often subtle and unnoticeable so many people don’t know they have an air quality problem. Learn more about indoor air pollution and how to improve conditions for healthy lungs in the home and office.