Albert Straus walked into a Marin County Board of Supervisors meeting with a six-pack of milk bottles. It sounds like the opening line of a joke, but in fact he was there to ask the board to endorse a proposition requiring the labeling of genetically modified foods. The bottles had been labeled to help make his case that the change wouldn’t be as onerous as the proposition’s opponents say.
Mr. Straus wasn’t the only one…