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  1. Math

    Ask-a-Friend Marketplaces

    If you ask enough friends, paying for answers to questions can help you get the answers you need from a social network.

    By Ivars Peterson
  2. Humans

    From the October 26, 1935, issue

    Electric light without wires, lab-grown flu virus, and superhard glass.

    By Science News
  3. Astronomy

    Spooky Sounds of Saturn

    For Hallowe’en, tune in to eerie, bizarre sounds from the Saturnian system. These NASA Jet Propulsion Lab Web pages provide sound files based on magnetometer data from Cassini spacecraft observations of Saturn’s moon Enceladus, radar echoes from Titan’s surface, Saturn’s radio emissions, and more. Go to: http://saturn.jpl.nasa.gov/multimedia/sounds/

    By Science News

  4. Read My Gestures: Body language can trump facial expressions

    Body language can influence the perception of emotion on a person's face.