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  1. Earth

    More Frog Trouble: Herbicides may emasculate wild males

    New studies of male frogs in the wild link trace exposures to common weed killers with partial sex reversal.

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  2. Health & Medicine

    A hint at a healthful effect of beer

    Beer consumption seems to boost concentrations of vitamin B6 in blood and coincides with lower concentrations of homocysteine, a risk factor for heart disease.

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  3. Health & Medicine

    Bats may spread new Malaysian virus

    A Nipah virus outbreak in Malaysia may have started when bats spread disease to pigs.

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  4. Invaders can conquer Africanized bees

    Bees that can take over even an Africanized-bee colony start by conning their nursemaids into giving them royal treatment.