Carbon monoxide is the leading cause of gas poisoning deaths in the United States. Many of these deaths as well as many cases of illness and brain damage could be prevented if all residences had carbon monoxide detectors.
Read the Consumer Product Safety Commission's publication, "The 'Invisible' Killer -- Carbon Monxide" for an explanation of carbon monoxide poisoning, possible sources of the problem, and what to do about them.
Learn more from Iowa State University Extension's listing of publications on carbon monoxide in the home and other buildings.