Vol. 194 No. 3
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More Stories from the August 4, 2018 issue

  1. Quantum Physics

    A tiny version of this physics toy is revealing quantum secrets

    Scientists created a quantum Newton’s cradle to study thermal equilibrium.

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  2. Earth

    Earth’s rivers cover 44 percent more land than we thought

    A global survey of rivers and streams based on satellite data suggests that these waterways traverse about 773,000 square kilometers.

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  3. Psychology

    Kids today are waiting longer than ever in the classic marshmallow test

    Preschoolers wait longer for extra treats than they used to. What does it mean?

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  4. Quantum Physics

    Mini machines can evade friction by taking quantum shortcuts

    Special maneuvers allow researchers to create tiny machines that are as efficient as possible.

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  5. Astronomy

    Astronomers snap the first baby pictures of a planet

    New telescope images give the clearest view of an exoplanet embryo yet.

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  6. Health & Medicine

    Evidence grows that an HPV screen beats a Pap test at preventing cancer

    More research finds that a test for human papillomavirus infection catches precancerous cervical cells better than the standard test, a Pap.

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  7. Anthropology

    Foot fossil pegs hominid kids as upright walkers 3.3 million years ago

    A foot from an ancient hominid child suggests that Lucy’s species, Australopithecus afarensis, walked early in life.

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  8. Animals

    Researchers create hybrid embryos of endangered white rhinos

    Scientists have made the first rhino embryos, providing a small glimmer of hope for the nearly extinct northern white rhinoceros.

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  9. Neuroscience

    Nerve cells that help control hunger have been ID’d in mice

    A mysterious bump on the human brain may be able to dial appetite up or down.

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  10. Animals

    Soaring spiders may get cues from electric charges in the air

    Spiders can sense atmospheric electric fields, which might give them cues to take to the air.

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  11. Materials Science

    Designer diamonds could one day help build a quantum internet

    A new design in artificial diamonds stores and releases quantum information better than others.

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  12. Paleontology

    Long-necked dinosaurs grew to be giants in more ways than one

    Some early relatives of giant, long-necked sauropods may have used a different strategy to grow to colossal sizes than previously thought.

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  13. Health & Medicine

    Cancer cells engineered with CRISPR slay their own kin

    Scientists can program the stealth cells to die before creating new tumors.

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  14. Archaeology

    Texas toolmakers add to the debate over who the first Americans were

    Stone toolmakers inhabited Texas more than 16,000 years ago, before Clovis hunters arrived.

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  15. Particle Physics

    A high-energy neutrino has been traced to its galactic birthplace

    The high-energy particle was born in a blazar 4 billion light-years away, scientists report.

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  16. Health & Medicine

    Scared of heights? This new VR therapy could help

    Virtual reality may be good training ground for facing your fears in real life.

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  17. Genetics

    50 years ago, scientists took baby steps toward selecting sex

    In 1968, scientists figured out how to determine the sex of rabbit embryos.

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  18. Anthropology

    How an ancient stone money system works like cryptocurrency

    Money has ancient and mysterious pedigrees that go way beyond coins.

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  19. Archaeology

    Stone tools put early hominids in China 2.1 million years ago

    Newly discovered stone tools in China suggest hominids left Africa 250,000 years earlier than we thought.

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