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  1. Health & Medicine

    Shields Down: A cancer-fighting gene declines in old age

    Decline of an important anti-cancer gene could contribute to increased cancer risk among the elderly.

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  2. Astronomy

    Match Made in Heaven: Nearby galaxies resemble faraway type

    Several nearby galaxies seem nearly identical to some of the remotest galaxies known, offering a glimpse of the era when galaxies first formed.

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  3. Health & Medicine

    Fueling a Flu Debate: Do vaccinations save lives among the elderly?

    Flu shots seem to prevent some deaths and limit hospitalizations for pneumonia in elderly people.

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  4. Paleontology

    Just a quick bite

    Saber-toothed cats living in North America around 10,000 years ago had a much weaker bite than modern big cats.