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Researchers Probe Cell-Phone Effects

By Janet Raloff

- More than 2 years ago

Cell phones are hot. Some 85 million U.S. residents—30 percent of the population—have joined the mobile-phone revolution.

Scientists are investigating perplexing biological effects of cell-phone use.

Still, Americans have been relatively slow to go wireless. Even a decade ago, when U.S. cell-phone use was a rarity, 10 percent of Swedes had taken the wireless plunge, says Maria Feychting of the Karolinska Institute in Stockholm.