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  1. Physics

    Twinkle Toes: How geckos’ sticky feet stay clean

    Besides allowing geckos to cling to walls and ceilings, the millions of tiny fibers on the undersides of these lizards' toes clean themselves with each step.

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  2. Health & Medicine

    Bad Combo? Some antidepressants may hamper breast cancer drug

    Certain widely used antidepressants and a woman's own genes might diminish the effect of tamoxifen, a frontline breast cancer drug.

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  3. 19501

    It should be noted that DDT was a poor example to use as an enantiomeric insecticide in this article, since that chemical doesn’t have an asymmetric carbon and therefore can’t exist in “mirror forms.” Gordon W.