WHO classifies radio frequency electromagnetic fields as a `` group 2B '' possible carcinogen . Group is catch-all category , and includes everything from carpentry to chloroform . Comment: Specific absorption rate is the most commonly cited benchmark .
WHO classifies radio frequency electromagnetic fields as a `` group 2B '' possible carcinogen . Group is catch-all category , and includes everything from carpentry to chloroform . Scientists are n't sure how to communicate cell phone RF emissions to consumers . Specific absorption rate is the most commonly cited benchmark .