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  1. Science Fair Snapshots

    Experience the 2002 Intel International Science and Engineering Fair, held recently in Louisville, Ky., via reports and photos produced by students from Kentucky school districts. Sorry! This web site is no longer available. For more current information on the Intel International Science and Engineering Fair, got to http://www.sciserv.org/isef/.

    By Science News
  2. Math

    Prime Effort: Powerful conjecture may be proved

    A mathematician may have finally proved Catalan's conjecture, a venerable problem in number theory concerning relationships among powers of whole numbers.

    By Ivars Peterson
  3. Physics

    Tiny tungsten beams lord over light

    By filtering radiated heat, a novel microstructure of crisscrossed tungsten beams promises to improve the efficiency of light bulbs and of heat-to-electricity conversion devices.