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The U.N. says the world's population will reach a milestone this Monday -- 7 billion people. Since 1927, our population has soared from 2 billion to 4 billion in 1974, 무료바둑이게임 and 6 billion in 1999. CBS News correspondent Russ Mitchell talks about the population increase with demographer Joel Cohen of Rockefeller University.

>Mitchell: "How fast is the world growing?"
asked Oct 11 by RodCarlin65 (100 points)

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