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  1. Humans

    Saving the Last Supper

    Tourists and cosmetics seem to be threatening da Vinci’s masterpiece.

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  2. Earth

    Arctic has taken a turn for the warmer

    Northern climate has changed substantially in the last five years, and the shift is probably permanent.

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  3. Humans

    Neandertals’ mammoth building project

    Stone Age people’s evolutionary cousins may have constructed earliest bone structures.

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  4. Find “extinct” fish alive in South African waters

    A “living fossil” gets new family members as more coelacanths turn up.

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  5. Letters

    Predators inspire poetry and fear Regarding “Lopped off” (SN: 11/5/11, p.