Californians have traditionally led the rest of the country toward new modes of behavior and thought. Those pictured here, who come from all walks of life, are joined by their commitment to bringing about a greener world, starting with their own nation-sized state of 36 million...

Since 2003, Terry Tamminen, the author of Lives Per Gallon: The True Cost of Our Oil Addiction, has served as Arnold Schwarzenegger's go-to environmental man. After helping to make California the state with the strictest standards in the country as head of its Environmental Protection Agency, he is now spreading the green message nationwide as a lecturer and consultant...

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