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  1. Animals

    Lizard push-ups grab attention

    Nearby lizards more likely to get the message if its preceded by push-ups

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  2. Paleontology

    Bacteria may play big role in forming fossils

    Bacteria can build a biofilm that preserves a tissue's structure.

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  3. Life

    Protein crucial in preventing Parkinson’s

    By destroying bad mitochondria, Parkin protects cells

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  4. Letters

    Reader letters from the Dec. 6 Science News.

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  5. Science Past for December 6, 1958

    Find cell “power plants”—Fragments of mitochondria, microscopic “islands” in the cell protoplasm surrounding the nucleus, are helping scientists find out how a cell gets its energy to carry on vital life processes.