It is all around us, and we breathe it every day to stay alive. But how clean is the air that we breathe? While we know that it contains oxygen, hydrogen and nitrogen, there may be other substances in the air around us that we do not know about ... such as dust, mites, spores, bacteria ,and hazardous fumes. Indoor Air Quality, available in Online and CD-ROM formats, shows employees the potentially harmful effects of poor air quality, and will help them prevent, identify, and correct air quality problems.