News

  1. Astronomy

    The sun’s older twin, 250 light-years away

    Almost twice as ancient, the distant star gives a glimpse of the sun's future.

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  2. Life

    Tiny human almost-brains made in lab

    Stem cells arrange themselves into a version of the most complex human organ.

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  3. Planetary Science

    Titan becomes even more enigmatic

    Thick, rigid crust of ice encases Saturn's largest moon, perplexing scientists.

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  4. Climate

    Global warming hiatus tied to cooler temps in Pacific

    Average air temperatures' rise has paused, but not stopped, because of normal variation in ocean temperatures.

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  5. Life

    A fight between gut parasites means a win for people

    Worms and Giardia can antagonize each other in the human intestinal tract, study of people in the Amazon suggests.