Autores:
  • I think it is manmade. I think it's clearly manmade. If you don't understand what the cause is, it's virtually impossible to come up with a solution. We know what the cause is. The cause is manmade. That's the cause. That's why the polar icecap is melting.

    Transcript of the Vice-Presidential Debate, www.nytimes.com. October 2, 2008.
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