San Francisco's Board of Supervisors has approved a new law requiring cell phone retailers to post the amount of radiation emitted from their phones.
The board voted 10-1 to approve a first-of-its-kind ordinance requiring stores to disclose the specific absorption rate, or SAR, of each phone they sell.
The measure is backed by Mayor Gavin Newsom, who is expected to sign it within 10 days.
Opponents say the city is responding to unfounded concern over cell phone radiation. Whether or not the radiation produced by cell phones causes cancer or other health problems is still a matter of debate among scientists.
Advocates say they hope the labels will dissuade consumers from buying higher-radiation phones until the science is clearer.
