Feature

  1. Agriculture

    Downtown Fisheries?

    Advances may make fish farming a healthy prospect, even for inner cities.

    By Janet Raloff

  2. Placental Puzzle

    Do captured viral genes make human pregnancies possible?

    By John Travis
  3. Math

    Changes of Mathematical State

    Untangling a web of conflicting demands can be tough on computers.

    By Ivars Peterson
  4. Physics

    The Physics of Fizz

    Toasting a burst of discovery about bubbles in champagne and beer.

    By Peter Weiss

  5. Cries and Greetings

    Baboon intimacy and detachment present vexing clues.

    By Bruce Bower

  6. The Meaning of Life

    Computers are unscrambling genomes to reveal the secrets in DNA codes.