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  1. Archaeology

    Ancient text gives Judas heroic glow

    Researchers have announced the restoration and translation of a 1,700-year-old papyrus document containing the Gospel of Judas, an account that portrays Judas Iscariot as a hero, not as Jesus' betrayer.

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  2. 19672

    Something mystified me about this article. Apparently, preservation experts are concerned that microorganisms could wipe out Stone Age cave paintings, as if this were an urgent threat. Has something altered the caves in which these paintings appear that has invited intensified bacterial growth? Don McMillanModesto, Calif. What threatens the paintings is a modern scourge: tourists. […]

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  3. Earth

    Buried Treasures

    Geologists have long understood the chemical processes that sculpt many cave formations, but they've only recently come up with a physical model that explains some of their shapes.