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  1. Tech

    Cooling film tempers tiny hot spots

    Shattering a 40-year-old performance limit, a new layered, semiconductor material promises to spur wider use of so-called thermoelectric devices that cool or heat electrically and can convert heat to electric power.

    By Peter Weiss

  2. Moms’ touch gives kids social push

    Premature babies frequently touched in soothing ways by their mothers exhibited much better social and emotional growth as toddlers than did peers who had been exposed to harsh forms of maternal touching.

    By Bruce Bower

  3. Maternal care may leave brain legacy

    Rat experiments indicate that mothers' licking and grooming of offspring induces biological changes in female pups that in turn regulate their maternal behavior as adults.