San Francisco board passes cell phone emission law By TREVOR HUNNICUTT 2010-06-23T02:34:23Z SAN FRANCISCO (AP) -- In this city known for producing laws both path-breaking and contentious, legislators have forcefully stepped into another debate - this time over the potential danger of cell phone use.... © 2010 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.