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  1. Bacterial Nanny: Beewolf grows microbe for protecting young

    A European wasp leaves a smear of bacteria near each of her eggs as protection against the perils of youth.

    By Susan Milius
  2. Materials Science

    Slick Surfaces: Pressure builds to make better motor oils

    Motor oil's protection against the wear and tear of steel engine parts takes effect only at high pressures.

    By Alexandra Goho

  3. 19527

    Regarding the therapeutic effects of sunflower-seed oil on infants, has any research been done as to the health benefits of the oil in any other age group? Yael LevyNew York, N.Y. Research to date has focused on newborns, says researcher Gary L. Darmstadt of Johns Hopkins University in Baltimore.