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TED Talks: Season 2012

2012x07 James Hansen: Why I must speak out about climate change
TV-PG

  • 2012-03-07T05:00:00Z on YouTube
  • 15 mins
  • United States
  • Documentary, Special Interest

Top climate scientist James Hansen tells the story of his involvement in the science of and debate over global climate change. In doing so he outlines the overwhelming evidence that change is happening and why that makes him deeply worried about the future.

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