Milham was especially interested in measuring the ambient levels of a particular kind of EMF, a relatively new suspected carcinogen known as high-frequency voltage transients, or “dirty electricity.” Transients are largely by-products of modern energy-efficient electronics and appliances–from computers, refrigerators, and plasma TVs to compact fluorescent lightbulbs and dimmer switches–which tamp down the electricity they use. This manipulation of current creates a wildly fluctuating and potentially dangerous electromagnetic field that not only radiates into the immediate environment but also can back up along home or office wiring all the way to the utility, infecting every energy customer in between.
With Cohen’s help, Milham entered the school after hours one day to take readings. Astonishingly, in some classrooms he found the surges of transient pollution exceeded his meter’s ability to gauge them. His preliminary findings prompted the teachers to file a complaint with the Occupational Safety and Health Administration, which in turn ordered a full investigation by the California Department of Health Care Services.
The final analysis, reported by Milham and his colleague, L. Lloyd Morgan, in 2008 in the American Journal of Industrial Medicine: Cumulative exposure to transients in the school increased the likelihood a teacher would develop cancer by 64%. A single year of working in the building raised risk by 21%. The teachers’ chances of developing melanoma, thyroid cancer, and uterine cancer were particularly high, as great as 13 times the average. Although not included in the tabulations, the risks for young students were probably even greater.
“In the decades-long debate about whether EMFs are harmful,” says Milham, “it looks like transients could be the smoking gun.”
El Monte, California
Ash Sha’m, United Arab Emirates,Ash Sha’m, UAE
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