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  1. Health & Medicine

    Palm-Nut Problem

    The ancient custom of chewing areca nuts is getting more popular as young Asians take up the habit, but betel-nut chewing has been linked to several types of oral cancer.

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  2. Proteins in the Stretch

    Scientists are for the first time getting a feel for how proteins fold and unfold.

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  3. Math

    Going with the Crowd

    Choosing a restaurant can pack them in.

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  4. Humans

    Letters from the January 8, 2005, issue of Science News

    Below the surface I would suggest that the Italian hydrologists cited in “Fighting Water with Water: To lift the city, pump the sea beneath Venice” (SN: 10/30/04, p.