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Quiz: How much do you know about smoking?

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  • How much do you know about smoking? Take our quiz to find out.
  • Which countries smoke the most -- and who grows the most tobacco?
  • Are you a medical marvel -- or does your knowledge need intensive care?
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From the Blogs: Controversy, commentary, and debate

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U.S.: No Afghan troop decision madeVenezuela, Colombia in war of words
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