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  1. Life

    In a first, mouse eggs grown from skin cells

    Stem cells grown in ovary-mimicking conditions in a lab dish can make healthy mouse offspring, but technique still needs work.

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  2. Neuroscience

    Out-of-sync body clock causes more woes than sleepiness

    The ailment, called circadian-time sickness, can be described with Bayesian math, scientists propose.

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  3. Ecosystems

    ‘Citizen Scientist’ exalts ordinary heroes in conservation science

    Journalist Mary Ellen Hannibal’s “Citizen Scientist” tells tales of ordinary people contributing to science.

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  4. Animals

    Be careful what you say around jumping spiders

    Sensitive leg hairs may let jumping spiders hear sounds through the air at much greater distances than researchers imagined.