California Air Resources Board
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So what did California do with that $1.4 billion in cap-and-trade money?
Here's what a state can buy when it starts taxing polluters.
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California’s carbon emissions are back to ’90s levels. It can be done, people!
How California hit its emissions goals in four colorful charts.
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A ferry that runs on hydrogen fuel cells is coming to San Francisco
California announced Monday that it is joining the push for zero-emissions passenger ships.