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  1. Materials Science

    Carbon nanotubes turn on water flow

    Computer simulations show that water molecules will quicklye nter and flow along a carbon nanotube just 8 nanometers in diameter.

    By Jessica Gorman
  2. Astronomy

    Galileo catches Io in a slump

    Galileo spacecraft images show for the first time that material has slid downward along a cliff on Jupiter's moon Io.

    By Ron Cowen

  3. From the December 19 & 26, 1931, issues

    SANTA CLAUS CAVALRYMEN BESTRIDE STRANGE STEEDS Captain Jinks of the Horse Marines bestrode an unfamiliar steed; but the gentleman in the cover picture mounts one more unfamiliar still. He might qualify as a trooper in the Santa Claus Cavalry, for he is mounted on a reindeer.