1. PM 2.5 (fine particulate matter 2.5 microns and under) have large health effects particularly on children. New EPA stardards are about to be released which likely will cause the area to be out of attainment. Conclusion from the study listed: Components of PM2.5 were associated with hospitalization for several childhood respiratory diseases including pneumonia, bronchitis, and asthma. Because exposure to components (e.g., EC, OC, NO3, and K) and their related sources, including diesel and gasoline exhaust, wood smoke, and other combustion sources, are ubiquitous in the urban environment, it likely represents an identifiable and preventable risk factor for hospitalization for children.

see http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2661920/

2. Exposure to dirty air is linked to decreased function of an immune system gene and appears to increase the severity of asthma in children, according to a joint study by researchers at Stanford University and the University of California-Berkeley.


More trees, healthier newborns! http://www.oregonlive.com/health/index.ssf/2011/01/more_trees_in_a_city_bring_sur.html


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