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  1. Animals

    Fox Selection: Bottleneck survivors show surprising variety

    Foxes native to a California island—famous for the least genetic diversity ever reported in a sexually reproducing animal—have some variation after all.

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  2. 19383

    The observations in this article are of stars and galaxies billions of light-years away and billions of years old. Has anyone ever thought about what the universe out there looks like today? Earl RosenwinkelDuluth, Minn. People have thought about what the universe looks like now and what it will look like in the distant future, […]

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  3. Astronomy

    Wrenching Findings: Homing in on dark energy

    In an analysis of a group of distant supernovas, astronomers have found hints that dark energy is distributed uniformly throughout space.