News

  1. Space

    Wet past for Red Planet

    An ocean blanketed one-third of Mars about 3.5 billion years ago, a new study suggests.

    By Ron Cowen
  2. Physics

    Physics in free fall

    Physicists drop supercold atoms down an elevator shaft to see what will happen.

    By Laura Sanders
  3. Humans

    For sight-reading music, practice doesn’t make perfect

    Individual memory differences may set upper limits on pianists’ sight-reading skill, regardless of their experience.

    By Bruce Bower
  4. Health & Medicine

    Genetic defect tied to autoimmune diseases

    Rare mutations in an enzyme lead to several different disorders.

    By Tina Hesman Saey
  5. Space

    All flash, no crash

    New Hubble Space Telescope images confirm that Jupiter emerged unscathed from an impactor that created a fireball above the planet’s cloud tops on June 3.