With millions of iPods and other MP3 players in the hands of consumers, the portable media players have made a racket in the marketplace for years. Now some experts warn that the devices make too much noise. A new study from the European Union cautions that people who listen to personal music players for too long, at too high a volume setting, may do serious damage to their hearing.

Ear Docs' Warning Rings Loud and Clear: Turn Down the iPod!