Vol. 184 No. #4 Archives

More Stories from the August 24, 2013 issue

  1. Life

    Lab-grown liver raises hopes but draws criticism

    Though human cells spontaneously group into rudimentary organs, some scientists say work is very preliminary.

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  2. Anthropology

    Agriculture’s roots spread east to Iran

    Dig supports prolonged development of domesticated crops at ancient sites across the Fertile Crescent.

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  3. Earth

    Every six years, Earth spins slightly faster and then slower

    Changes in day length linked to workings of Earth's core.

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  4. Astronomy

    The solar system has a tail

    Clover-shaped clumps of charged particles extend billions of kilometers in our wake.

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  5. Tech

    Sound waves put levitation on the move

    Technique transports nonmagnetic particles such as cells, water droplets and coffee grounds.

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  6. Life

    Flagellum failure lets bacteria turn

    Buckling of appendage drives tiny two-point turn.

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  7. Paleontology

    Dinosaur had impressive schnoz

    Fossils found in Utah reveal geographic segregation of horned species.

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  8. Astronomy

    Milky Way’s black hole pulling in gas cloud

    Galaxy's maw begins to tear apart and change the velocity of an approaching object.

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  9. Life

    Mouse retinas grown in lab

    Transplanted cells can function in rodents' eyes.

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  10. Cosmology

    Gold seen in neutron star collision debris

    Material ejected in gamma-ray bursts may be a main source of the heavy elements.

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  11. Animals

    Eye-tracking cameras show peahens’ wandering gaze

    Data show that female birds are not so riveted by their suitors’ magnificence

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  12. Life

    A flash of light implants false memories in mice

    Researchers alter rodents' recollections by exciting just a few neurons.

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  13. Health & Medicine

    Gastric bypass surgery causes sugar-burning gut growth in rats

    The rapid improvement in symptoms of diabetes, seen in patients before weight loss begins, may be due to changes in part of the intestine.

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  14. Health & Medicine

    Full moon may mean less sleep

    Slumber waxes and wanes along with lunar rhythm, researchers find with people sleeping in windowless lab.

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  15. Planetary Science

    Cassini photo puts Earth in perspective

    Probe captures planet from 1.4 billion kilometers away.

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  16. Anthropology

    Mummified Incan teen drank, did drugs

    Girl, who was sacrificed, may have been sedated by alcohol, coca leaves.

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  17. Physics

    Doppler effect takes a spin

    Light’s twistiness allows researchers to measure rotating object’s speed.

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  18. Life

    Evolution of mammalian monogamy remains mysterious

    Two large studies reach opposing conclusions about why males stay with females.

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  19. Neuroscience

    One sleepless night weakens resolve in the face of doughnuts

    Sleep loss changes brain activity and food preferences.

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  20. Science & Society

    Flu researchers plan to repeat controversial work

    The scientists who made the H5N1 strain transmissible between ferrets intend to do the same with H7N9.

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  21. Genetics

    A glowing green thumb

    Omri Amirav-Drory wants to engineer a glow-in-the-dark garden.

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  22. Climate

    The Attacking Ocean

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  23. Tech

    On the Rebound

    Scientists revive search for new rubber sources.

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  24. Science & Society

    Impactful Distraction

    Talking while driving poses dangers that people seem unable to see.

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  25. Letters to the editor

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  26. Physics

    Key to Other Worlds

    Excerpt from the August 17, 1963, issue of Science News Letter.

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  27. Neuroscience

    The Autistic Brain

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