News
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AstronomyThe sun’s older twin, 250 light-years away
Almost twice as ancient, the distant star gives a glimpse of the sun's future.
By Andrew Grant -
LifeTiny human almost-brains made in lab
Stem cells arrange themselves into a version of the most complex human organ.
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Planetary ScienceTitan becomes even more enigmatic
Thick, rigid crust of ice encases Saturn's largest moon, perplexing scientists.
By Andrew Grant -
ClimateGlobal warming hiatus tied to cooler temps in Pacific
Average air temperatures' rise has paused, but not stopped, because of normal variation in ocean temperatures.
By Erin Wayman -
LifeA 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.