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Why I must speak out on climate change: James Hansen at TED2012

Why I must speak out on climate change: James Hansen at TED2012

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Photo: James Duncan Davidson Drawn into controversy Wearing his wide-brimmed hat, climate scientist James Hansen starts his TEDTalk by asking, “What do I know that would cause me, a reticent midwestern scientist, to get arrested in front of the White House, protesting?” Hansen studied under professor James Van Allen, who told him about observations of Venus []