The Obama administration’s EPA finally answered the burning question, what is the likely cause of global warming? It could be the first step toward sweeping emissions regulations. Bob Orr reports.
Bob Orr, CBS Evening News, 17 April 2009. Video.

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The Obama administration’s EPA finally answered the burning question, what is the likely cause of global warming? It could be the first step toward sweeping emissions regulations. Bob Orr reports.
Bob Orr, CBS Evening News, 17 April 2009. Video.