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  1. Animals

    The secret appetite of cleaner wrasses

    The little reef fish that nibble parasites off bigger fish that stop by for service actually prefer to nibble the customers.

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  2. Health & Medicine

    Anthrax toxin curbs immune cells

    A toxin produced by the anthrax bacterium suppresses cells that launch the body's immune response.

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  3. Physics

    Antiglare eye black is better than tape

    Black grease that athletes smear under their eyes to control the glare of the sun really helps them discern contrast; what's more, it works better than black tape, a newer antiglare aid.

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  4. Old Worms, New Aging Genes

    The genes and hormonal signals that regulate life span in worms may do the same in people.