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St. Paul, Minn.

Fighting global warming

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former Vice President Al Gore
Former Vice President Al Gore is also author of the book "The Assault on Reason." He travels the world to speak about global warming.
Ronaldo Schemidt/AFP/Getty Images

Former Vice President Al Gore says global warming has become a "planetary emergency." He also says big energy companies are financing a campaign of misinformation to convince the public that scientists disagree about global warming. He discussed his concerns during a recent conversation with venture capitalist John Doerr at the Aspen Institute.

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former Vice President Al Gore
Former Vice President Al Gore is also author of the book "The Assault on Reason." He travels the world to speak about global warming.
Ronaldo Schemidt/AFP/Getty Images