Cell phones are hot.
Still, Americans have been relatively slow to go wireless. Today, Nordic countries remain Western leaders, with 40 percent of Danes, half of Norwegians and Swedes, and almost 60 percent of Finns using cell phones. Many of these people are also reporting side effects, observes Monica Sandstr m of the Swedish National Institute for Working Life in Ume . One-quarter of the Norwegian users, she noted, feel warmth on or behind the ear when they use their phones. Her agency saw the same trends in Sweden, though the overall rates were somewhat lower, Sandstr m notes.