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  1. Neural Shape-Up: Brain anticipates object perception

    A new brain-scan study indicates that so-called higher visual areas predict the structure of incoming visual information and suppress activity in the visual system's entry area to foster object recognition.

    By Bruce Bower
  2. 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.

    By Janet Raloff
  3. 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.

    By Nathan Seppa
  4. Health & Medicine

    Bats may spread new Malaysian virus

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