The advertisements seem to be everywhere. They wink like neon eyes from the sides of San Francisco's railcars, radiate a lime-colored glow from within bus stop kiosks, unfurl the green carpet of their messages along the flanks of local websites.The ad design is striking, the enticing color drawing tired eyes away from the gray cityscape or the flickering computer screen. Some of the statements are clear and confident: Green is a city with country air. Green is 4 wheels on the road versus 400. Let's green this city. Others seem a bit more cryptic and smack of typical ad copy that seeks not to introduce clarity but incite desire: Green is yellow. Green is blue. Green is sitting next to a perfect stranger.Really?


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Over the last 30 years, as environmentalism has slowly shifted from fringe to fact of life, the definition of "green" has morphed into a hip, educated social identity, and a business PR model. |

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Sales progress is charted with stuffed animals hanging from a climbing wall. Employees volunteer in the community on company time. The Clif Bar fleet runs on 100 percent biodiesel, which wafts the scent of French fries from its tailpipes. |

