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  1. Uncommon cancer gets start in muscle cells

    Synovial sarcoma, a cancer thought to arise from joint tissue, actually forms in nascent muscle cells, a mouse study shows.

    By Nathan Seppa
  2. Animals

    Killer mice hit seabird chicks

    A surveillance video shows a worrisome sight: house mice nibbling to death rare seabird chicks on a remote island breeding colony.

    By Susan Milius
  3. Planetary Science

    A hexagon on the ringed planet

    NASA scientists are puzzled by a giant, hexagon-shaped feature that covers Saturn's entire north pole.

    By Ron Cowen

  4. 19825

    The NASA researchers baffled in this article by the hexagonal shape in Saturn’s soupy atmosphere at its northern pole should read “As waters part, polygons appear” (SN: 6/3/06, p.