News

  1. Animals

    Perfect Match: Tied contest gives fish no hormone rush

    A male fish produces a burst of hormones as he fights off an intruder, but this surge isn't triggered simply by fighting.

    By Susan Milius
  2. Tech

    Electronics Gets Y’s: Nanotubes branch out as novel transistors

    Y-shaped nanotubes might become a common component in ultrasmall electronic circuitry.

    By Peter Weiss
  3. Materials Science

    Sun and Sand: Dirty silicon could supply solar power

    Scientists have proposed a way to control the distribution of contaminants in silicon, potentially opening up the use of cheaper starting materials for making solar cells.

    By Aimee Cunningham
  4. Planetary Science

    Top of the Martian hill

    After a 14-month climb up a Martian hill, NASA's rover Spirit took a panoramic image of the view from the top.