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  1. Health & Medicine

    Insulin lowers more than blood sugar

    Insulin may reduce inflammation and protect the heart.

    By John Travis
  2. Health & Medicine

    Healing the heart from within

    An unusual mouse strain can regenerate heart tissue when the organ is damaged.

    By John Travis
  3. Health & Medicine

    Stem cell research marches on

    Cells from human embryos can be transformed into heart cells or insulin-secreting cells.

    By John Travis
  4. Paleontology

    Completing a titan by getting a head

    When paleontologists unearthed the skeleton of a 70-million-year-old titanosaur in Madagascar in the late 1990s, they also recovered something that had been missing from previous such finds: a skull that matched the body.