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  1. Health & Medicine

    Antioxidants + heart drugs = bad medicine?

    Taking dietary antioxidant supplements along with certain cholesterol-regulating drugs may diminish the effectiveness of those drugs in boosting the so-called good cholesterol.

    By Janet Raloff
  2. Health & Medicine

    Insect-saliva vaccine thwarts parasite

    Mice inoculated with a component of sand fly saliva develop immunity to Leishmania, a protozoan that infects hundreds of thousands of people in the tropics each year.

    By Charlotte Schubert

  3. The trouble with small male spiders

    A test of an old view of sexual cannibalism—that it's a way of rejecting suitors—finds that small males lose out, but not from attacks by females.

    By Susan Milius

  4. Funnel-web males send knockouts in air

    Male funnel-web spiders seem to waft some kind of gas toward females that renders the females limp, enabling the males to mate without being eaten.