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. One-quarter of the Norwegian users, she noted, feel warmth on or behind the ear when they use their phones. At least one of the symptoms noted, which include dizziness, concentration difficulties, memory loss, and a burning sensation, showed up in 47 percent of people who reported using these wireless devices an hour or more daily. The newer, digital phones broadcast their communications in discrete bursts of energy, whereas analog devices employ continuous signals.