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Looking backwards to establish who/what caused global warming is of no value except to history books. Since we finally seem to have consensus that global warming is happening, the only question, then, is what to do about it. We can do nothing and hope for the best. Or we can pursue strategies that try to reduce the globe’s temperature. Who gives a damn whether humans caused it or not? Only humans have a chance at fixing it. Let’s get on with it.

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