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  1. Baby talk goes to the dogs, and cats

    Acoustic differences in the "baby talk" that mothers use with their infants and with family pets support the notion that adults use this form of speech to teach language skills to their babies.

    By Bruce Bower
  2. Chemistry

    Steering reactions with light

    A light-based scheme for guiding the motion of chemical wave fronts may suggest ways to control analogous waves present in epileptic seizures and heart arrhythmias.

    By Peter Weiss
  3. Earth

    The Air That’s Up There

    Researchers are exploring how trees affect the chemistry of the atmosphere.

    By Jessica Gorman

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