The Star - News, views and advertising of the Grand Coulee Dam Area

Coulee Medical Center ER and Walk-In Care

By Bob Valen 

The air in our lungs

Weather Watcher

 


The air around us is polluted, and the level of pollution in our air varies constantly. The causes of the pollution fluctuate as well. The pollution consists of gases and particulate matter. Common “natural” sources are forest and range fires, volcanic activity and various gases that originate in nature. Most all of these natural sources are not constant, unlike the sources that humanity produces on a recurring and regular basis.

Envision pre-historic human activity after fire became part of daily life. The evolution of the use of fire goes from shelter or cave for cooking and warmth to...



For access to this article please sign in or subscribe.



You might be interested in:
 

Reader Comments
(0)