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  1. Health & Medicine

    Cloning’s ups and downs

    Dolly, the world's first cloned mammal, has developed arthritis, and two biotech firms have turned to cloning in their attempt to create pigs with organs that human bodies won't reject when transplanted.

    By John Travis
  2. Health & Medicine

    Cancer fighter reveals a dark side

    Overactivity of a tumor-suppressing gene shortens the lifespan of mice.

    By John Travis
  3. Humans

    From the January 16, 1932, issue

    A PHARAOH’S RIGHTHAND MAN Add the name of Ken-Amun, ambitious Egyptian politician, a Pharaoh’s righthand man, to the list of unusual personalities from ancient Egypt. Ken-Amun’s tomb, cut into a rocky hillside in the Valley of the Kings, has been known for almost a century, but has been strangely neglected.