Uncategorized

  1. Archaeology

    Rat DNA points to Pacific migrations

    An analysis of mitochondrial DNA from Pacific rats supports a theory that ancestors of today's Polynesians migrated from Southeast Asia to a string of South Pacific islands in at least two separate dispersals.

    By Bruce Bower
  2. Earth

    Warmer climate, decreased rice yield

    Agricultural data gathered over a dozen years at a Philippines rice paddy suggest that climate changes brought about by global warming could significantly diminish rice yields.

    By Sid Perkins
  3. Materials Science

    DNA coordinates assembly of glassy nanoscale structures

    Chemists use DNA as a scaffold to construct miniature rings and rods out of silica.

    By Alexandra Goho
  4. Health & Medicine

    Caloric threats from sugarfree drinks?

    Regularly downing sweet drinks or sugar substitutes may foster overeating by reprogramming an individual's ability to judge a snack's caloric impact.