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  1. Health & Medicine

    Tackling stroke and heart risks

    Lowering cholesterol in diabetes patients lessens their risk of heart attack or stroke, even when their initial cholesterol was in the normal range.

    By Nathan Seppa

  2. Sperm defender has second role

    An antimicrobial protein may also trigger maturation of sperm.

    By John Travis
  3. Health & Medicine

    Compound in salsa kills off Salmonella

    Cilantro, one of the key ingredients of salsa, harbors an antibacterial compound that attacks Salmonella bacteria.

    By Alexandra Goho

  4. 19432

    Does it really take a team of scientists running computer simulations to come up with the common sense that the greater the common surface area of two objects that touch, the more efficient the stacking? The closer objects are to being flat, the more efficiently they will stack.