San Francisco could soon require that all cellphones sold in local stores include an easily visible warning of their radiation levels. Mayor Gavin Newsom says he hopes to pass an ordinance in January that would demand the public display of the possible effects and has backed a city commission that would call on the US government to require such labels on the packaging. The non-binding request would also ask for warnings that phones may cause brain cancer and demand that companies offer headsets to distance the phone from its owner's head.
