Detailed text transcripts for TV channel - CNN - 20110522:11:32:00
Study who use a cell phone for ten years or more had double the rate of a type of tumor. keep in mind cell phone use in the united states has only been popular for around 15 years. in 1996, there were 34 million cell phone users. today, nearly 300 million in use according to industry figures. >> environmental factors take decades to see their effect and not a few years. >> if it may take decades to get a clearer answer, what can we say about cell phone safety now? scientists here in san jose, california, are trying to answer that very question. >> one of the things we have to do first is liter...