Feature

  1. Venus sails across sun in rare display

    Transit events happen in pairs separated by more than a century.

    By Meghan Rosen

  2. New species of the year

    More creatures, less Latin used to describe them.

    By Susan Milius

  3. Avant-garde cave art

    Paintings and animation date way back.

    By Bruce Bower

  4. ‘Good’ cholesterol may be overrated

    Surprise result questions heart protection from HDL.

    By Nathan Seppa

  5. Obesity research gets weightier

    Findings are filling out the story behind the fat.

    By Nathan Seppa

  6. You really can learn while you sleep

    Brain stays busy during lights-out.

    By Laura Sanders

  7. Out on a limb

    Fossils suggest early bipedal hominids still climbed.