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  1. Health & Medicine

    Budding Tastes: Higher blood pressure in newborns links to salt preference

    Babies who tolerate a salty flavor have higher blood pressure on average than their less tolerant counterparts do.

    By Nathan Seppa
  2. Math

    Testing for Divisibility

    The crisp new dollar bill that I have just taken from my wallet bears the serial number 24598176. It’s easy to tell that the number is exactly divisible by 2 but not by 5. Is it divisible by 3? by 4? by 11? In a 1962 Scientific American article, Martin Gardner noted that during the […]

    By Ivars Peterson
  3. Earth

    Nature’s Own: Ocean yields gases that had seemed humanmade

    Chemical analyses of seawater provide the first direct evidence that the ocean may be a significant source of certain atmospheric gases that scientists had previously assumed to be produced primarily by industrial activity.