Many people spend large portion of time indoors - as much as 80-90% of their
lives. We work, study, eat, drink and sleep in enclosed environments where air
circulation may be restricted. For these reasons, some experts feel that more
people suffer from the effects of indoor air pollution than outdoor pollution.
There are many sources of indoor air pollution. Tobacco smoke, cooking and
heating appliances, and vapors from building materials, paints, furniture, etc.
cause pollution inside buildings. Radon is a natural radioactive gas released
from the earth, and it can be found concentrated in basements in some parts of
the United States. Additional information about the radon problem is available
from the USGS
and the Minnesota Radon Project.
Pollution exposure at home and work is often greater than outdoors. The
California Air Resources Board
estimates that indoor air pollutant levels are 25-62% greater than outside
levels and can pose serious
Both indoor and outdoor pollution need to be controlled and/or prevented.
How can we
prevent the damaging effects of air pollution?