News

  1. Plants

    Dawn of the Y: Papaya—Glimpse of early sex chromosome

    Genetic mappers say that the papaya plant has a rudimentary Y chromosome, the youngest one in evolutionary terms yet found, offering a glimpse of the evolution of sex chromosomes.

    By Susan Milius
  2. Planetary Science

    Spirit Gets Its Wheels Dirty: Mars rover begins scientific work

    Spirit, the rover that landed on Mars on Jan. 3, last week began studying the rocks and soil at its landing site.

    By Ron Cowen
  3. Health & Medicine

    Cluster Buster: Might a simple sugar derail Huntington’s?

    A study in mice with a disease resembling Huntington's shows that a simple sugar impedes the protein aggregation that kills brain cells.