Is Wi-Fi bad for you?

No one knows. And that, say some groups, is the problem. The near-ubiquity of wireless networks has led to concerns over an "electronic smog" of radio waves that stretches from the home to Starbucks and the classroom; anywhere, in fact, that a computer can connect to the internet without wires. The rapid spread of the networks has been accompanied by negligible research into the potential risks.

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