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www.emfnews.org www.emfnews.org www.emfnews.org By Amy Rosenthal / EWG Enviroblog Research is not yet settled on exactly how dangerous cell phone radiation is to your health. But we at Environmental Working Group have seen enough studies with enough troubling results that we think it’s worth your while to reduce your exposure to cell phone radiation. www.emfnews.org When we talked a few weeks ago about insufficient government cell phone regulations, we discussed “SAR” values and the legal limits the government has set for the amount of radiation a phone can emit. But SAR values aren’t always easy to pin down – so today we’re going to look closely at what they are and how they can vary by phone. What does SAR mean, anyway? “SAR” stands for “specific absorption rate” – it’s a measure of how much radiation is absorbed by your body, given in Watts per kilogram (W/kg). Scientists test for SAR values using models of the human body filled with viscous fluid designed to mimic human tissue. The phone is placed next to the mold, and while the phone transmits a signal, a probe inside the human model measures the absorbed energy levels. The phone’s SAR value is designated as the highest amount of radiation detected during these tests. What determines a phone’s emission level? A phone’s SAR value is largely determined by the design of its inner hardware and antenna. But, since the SAR measures how much radiation is absorbed by your body (heartening, huh?), the value is determined by …