News

  1. Astronomy

    Major merger

    Four galaxies are ramming into each other in one of the biggest cosmic collisions ever recorded.

    By Ron Cowen
  2. Health & Medicine

    How platelets help cancer spread

    A tumor cell protein influences blood platelets in a way that helps a cancer spread through the body.

    By Sarah Webb
  3. Earth

    Laser printers can dirty the air

    Some laser printers emit substantial amounts of potentially hazardous nanoscale particles.

    By Janet Raloff
  4. Health & Medicine

    Aura origins show the way in epilepsy surgery

    Epilepsy patients who experience multiple auras before a seizure, usually considered poor candidates for corrective brain surgery, might benefit from by a new brain scan procedure.