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  1. Animals

    Hot and hungry bees hit hot spots

    New lab experiments suggest that bumblebees like warm flowers and can learn color cues to pick them out.

    By Susan Milius

  2. Autism’s Cell Off: Neural losses appear in boys, men with disorder

    The brains of boys and men with autism, a developmental disorder that impairs communication and social interaction, contain low numbers of neurons in a structure involved in emotion and memory.

    By Bruce Bower
  3. Humans

    Racial IQ Gap Narrows: Blacks gain 4 to 7 points on whites

    African Americans reduced the racial gap on IQ-test scores by about one-third between 1972 and 2002.

    By Eric Jaffe

  4. 19715

    I suspect the findings in this article might be correlated with the reduction in lead exposure over the same timeframe.