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  1. Life

    Humans have skeletal stem cells that help bones and cartilage grow

    Human skeletal stem cells have been found for the first time.

    By Tina Hesman Saey
  2. Life

    DNA from seized elephant ivory unmasks 3 big trafficking cartels in Africa

    Scientists can sleuth out wildlife crime and aid law enforcement by tracing elephant DNA from ivory seizures back to the source.

    By Laurel Hamers
  3. Materials Science

    High-tech ‘skins’ turn everyday objects into robots

    Robotic skins turn inanimate objects into multipurpose machines.

    By Maria Temming
  4. Neuroscience

    Over-the-hill cells may cause trouble in the aging brain

    Killing dormant cells in the brains of mice staved off memory trouble.