Monday, April 11, 2011
After Brain Study, New Questions About Mobile Phones
VOA Learning English video: After Brain Study, New Questions About Mobile Phones
"How important is your mobile phone, better known to Americans as a cellphone? Many people say they use the device all the time. So far, no studies have proven beyond question that the radio signals from cellphones cause brain cancer or other health problems. But a new study by government scientists in the United States has some people wondering what to think. The scientists found that holding a cellphone to your ear for at least fifty minutes increases brain cell activity."