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TEDTalks : Earth in its final century? - Martin Rees (2005) in Astronomy Physics Videos | Science Flicks

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TEDTalks : Earth in its final century? - Martin Rees (2005)

Speaking as both an astronomer and "a concerned member of the human race," Sir Martin Rees examines our planet and its future from a cosmic perspective. He urges action to prevent dark consequences from our scientific and technological development.