Running time 1 minute 35 seconds

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Researchers are learning that cigarettes with reduced cancer-causing toxins may be no safer than regular cigarettes because smokers compensate by puffing harder, longer, or more frequently.

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Running time 1 minute 24 seconds

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Some teenagers are smoking so-called "bidis," additive-free cigarettes that they perceive to more natural and therefore safer. The truth is anything but.

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