Anyone who lives in metro Phoenix has seen the brown cloud that drapes the horizon on a still day.
The pollution is more than what can be seen. Valley air carries bits of dirt, toxic metals, ammonia from farm fertilizer, ozone that irritates nasal tissues. Freeways spew a mix of exhaust and dust, putting anyone who lives nearby at an increased risk.
A day with bad air takes its toll first on those who are already ill. A heavily polluted day sends children to emergency rooms. People with respiratory problems are forced indoors. But a lifetime with bad air takes a toll on each one of us. People who live in bad air live shorter lives. http://www.azcentral.com/news/air-quality/
Article courtesy of The Republic by Mark Henle
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