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  1. Evolutionary Upstarts

    Theories of the evolution of the human mind are evolving, with some researchers now presenting alternatives to the dominant notion that genetic competition for survival during the Stone Age yielded brains stocked with a bevy of instincts for specific types of thinking.

    By Bruce Bower
  2. Plants

    The Wood Detective

    Alex Wiedenhoeft belongs to the elite profession of wood identifier, the person to call when a crime investigator, museum curator, archaeologist, or patent attorney with an unusual client really needs to know what that splinter really is.

    By Susan Milius
  3. Physics

    Neon gives healthy glow to reactor

    Preferring neon to nicotine, magnetic-fusion reactors called tokamaks get a performance boost from puffs of the noble gas.