In this video (the second of two) of his victory speech this evening in Houston, at about 7 min. in, Obama discusses energy policy — says we’re shipping money overseas and melting the polar icecaps. He pledges to cap carbon, invest in renewable energy, and raise fuel efficiency in cars (it’s "the only way we can bring down gas prices in the long term"):

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The ice caps are greeted with silence. Renewable energy gets huge cheers.