Web-based exercise. You can find the report of the National Institute of Environmental Health Sciences (NIEHS) on the possible health effects of exposure to power lines at www.niehs.nih.gov/health/

topics/agents/emf/. Visit the site. Although the few studies that have been conducted on adult exposures show no evidence of a link between adult cancer and exposure to residential electric and magnetic fields, what does the description given at the site say that NIEHS scientists have concluded?

Why?

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