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.

  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.

  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?

  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.

  5. Astronomy

    Astronomers snap the first baby pictures of a planet

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

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  13. Health & Medicine

    Cancer cells engineered with CRISPR slay their own kin

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

  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.

  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.

  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.

  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.

  18. Anthropology

    How an ancient stone money system works like cryptocurrency

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

  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.