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  1. Dog personality: His master’s traits

    Personality traits may vary as much from one dog to another as they do from one person to another, a new study suggests.

    By Bruce Bower
  2. Materials Science

    Nanowires grow on viral templates

    Researchers are using viruses to assemble semiconducting nanowires—the building blocks of future electronic circuits.

    By Alexandra Goho
  3. Physics

    Light pulse hovers in atom capsule

    A new way to freeze light pulses in midflight preserves the pulses' optical energy and may eventually lead to using stationary light in optical circuits and quantum computers.

    By Peter Weiss

  4. Human genes take evolutionary turns

    Researchers have identified a set of genes that has evolved an extensive pattern of alterations unique to people.