News

  1. Animals

    West Nile virus hits bird populations

    West Nile virus has hammered populations of five common North American birds.

    By Susan Milius
  2. Planetary Science

    Eris dwarfs Pluto

    Ex-planet Pluto suffers another demotion, as observations show that it's much less massive than Eris, another distant denizen of the outer solar system.

    By Ron Cowen
  3. Tech

    A computer in every cell

    Artificial genes inserted into cells make RNA molecules that can perform logical computations.

    By Patrick Barry
  4. Animals

    Profiles in Courtship: Flirting male fish show their best sides

    Courting male guppies that sport a tad more orange on one side of their bodies than on the other tend to flash that brighter side at females.