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  1. Planetary Science

    Mars reveals more frozen water

    Planetary scientists have discovered ice near the edge of Mars' south polar cap.

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  2. Archaeology

    Old legend dies hard

    People who first entered King Tutankhamen's tomb did not suffer from a legendary curse but instead lived long lives.

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  3. Chemistry

    Delivering the Goods

    Experimental gene-delivery therapies generally use viruses to shuttle genetic material into cells, but some researchers are devising ways to avoid using the sometimes-risky viruses.

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  4. 19206

    Your article has a picture of a “deer stone.” On it are engraved designs of reindeer that bear an astonishing resemblance to a tattoo borne by the 2,400-year old mummy discovered in 1993 in central Asia.