That report helped to lay to rest public concern about the much-trumpeted threat posed by EMFs.

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But how much further should we go to avoid the constant barrage of electromagnetic fields (EMFs) that surround us every day?

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Knowing that some electric pencil sharpeners emit more EMFs than most copy machines is enough to help you change some of your office habits.

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In the largest study of its kind, researchers looked at every case of childhood cancer - and found no association whatsoever with EMFs, whether created by power lines or simply by wiring arrangements in the home.

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