Cell Phone Warning

Sara Loughran, a 24-year-old graduate student at the University of Pittsburgh, talks on her cell phone while waiting for a bus on campus in Pittsburgh, Wednesday, July 23, 2008. The head of the University of Pittsburgh Cancer Institute released a memo advising faculty and staff to limit cell phone use because of “the growing body of literature linking long-term cell phone use” to cancer and other possible health problems. (AP Photo/Keith Srakocic)

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