News

  1. Health & Medicine

    Monthly cycle changes women’s brains

    Activity in a brain region that regulates emotions fluctuates over the course of a woman's menstrual cycle.

    By Christen Brownlee
  2. Planetary Science

    Cassini snaps icy moon Dione

    Saturn's small moon Dione has a heavily-cratered, fractured surface.

    By Ron Cowen
  3. Planetary Science

    Protecting Earth: Gravitational tractor could lure asteroids off course

    Relying solely on the tug of gravity, a proposed spacecraft could divert an asteroid on a collision course with Earth.

    By Ron Cowen
  4. Physics

    Ghostly Electrons: Particles flit through atom-thin islands

    Electrical measurements of one-atom-thick slices of carbon reveal extraordinary electronic properties, including electrons that seem massless and move at blazing speeds.