News

  1. Health & Medicine

    Gene Variant Tied to Human Aging

    Variants of a gene linked to mouse aging are more prevalent in elderly people than in newborns, suggesting that the gene influences human aging or specific age-related illnesses.

    By John Travis
  2. 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
  3. Health & Medicine

    Cancer fighter reveals a dark side

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

    By John Travis
  4. Anthropology

    Stone Age signs of complexity

    Ancient engravings found in South Africa support the theory that humans began to think and behave in symbolic ways a surprisingly long time ago.