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E.g., 11/18/2017
E.g., 11/18/2017
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  • 50 years ago, artificial limbs weren’t nearly as responsive

    Electric limbs

    Very subtle control of artificial limbs by means of a tiny electronic device may become possible.… [The] electronic device … [is] designed to be injected into a muscle through a thick hypodermic needle. A tiny package strapped to the outside of the limb will beam radio waves at the device, which will return them, modified by the electric current produced in the muscle. — ...

    11/16/2017 - 08:00 Technology, Neuroscience
  • Feature

    How Asian nomadic herders built new Bronze Age cultures

    Nomadic herders living on western Asia’s hilly grasslands made a couple of big moves east and west around 5,000 years ago. These were not typical, back-and-forth treks from one seasonal grazing spot to another. These people blazed new trails.

    A technological revolution had transformed travel for ancient herders around that time. Of course they couldn’t make online hotel reservations....

    11/15/2017 - 12:00 Archaeology, Anthropology, Genetics
  • Feature

    Simulating the universe using Einstein’s theory of gravity may solve cosmic puzzles

    If the universe were a soup, it would be more of a chunky minestrone than a silky-smooth tomato bisque.

    Sprinkled with matter that clumps together due to the insatiable pull of gravity, the universe is a network of dense galaxy clusters and filaments — the hearty beans and vegetables of the cosmic stew. Meanwhile, relatively desolate pockets of the cosmos, known as voids, make up a thin...

    11/14/2017 - 15:30 Cosmology
  • Context

    Philosophical critique exposes flaws in medical evidence hierarchies

    Immanuel Kant was famous for writing critiques.

    He earned his status as the premier philosopher of modern times with such works as Critique of Pure Reason, Critique of Practical Reason and Critique of Judgment. It might have been helpful for medical science if he had also written a critique of evidence.

    Scientific research supposedly provides reliable evidence for physicians to...

    11/13/2017 - 14:30 Science & Society, Clinical Trials, Biomedicine
  • Introducing

    The Lord Howe stick insect is officially back from the dead

    It’s a rare triumph when a species comes back from the dead. A new genetic analysis has officially established what many entomologists and conservation biologists hoped was true: The Lord Howe stick insect (Dryococelus australis) lives.

    Nicknamed “tree lobsters,” the dark-brown crawlers are nocturnal, flightless creatures that can grow up to 15 centimeters long. They feed on tea trees,...

    11/13/2017 - 12:30 Animals, Conservation, Evolution
  • News

    Cholera pandemics are fueled by globe-trotting bacterial strains

    Cholera strains behind worldwide outbreaks of the deadly disease over the last five decades are jet-setters rather than homebodies.

    It had been proposed that these cholera epidemics were homegrown, driven by local strains of Vibrio cholerae living in aquatic ecosystems. But DNA fingerprints of the V. cholerae strains behind recent large outbreaks in Africa and Latin America were more...

    11/13/2017 - 07:00 Health
  • News

    Why the wiggle in a crowd’s walk can put a wobble in a bridge

    View the video

    Some bridges could really put a swing in your step.

    Crowds walking on a bridge can cause it to sway — sometimes dangerously. Using improved simulations to represent how people walk, scientists have now devised a better way to calculate under what conditions this swaying may arise, researchers report November 10 online in Science Advances.

    When a bridge —...

    11/10/2017 - 14:00 Physics
  • Science Visualized

    See these first-of-a-kind views of living human nerve cells

    The human brain is teeming with diversity. By plucking out delicate, live tissue during neurosurgery and then studying the resident cells, researchers have revealed a partial cast of neural characters that give rise to our thoughts, dreams and memories. 

    So far, researchers with the Allen Institute for Brain Science in Seattle have described the intricate shapes and electrical properties...

    11/09/2017 - 07:00 Neuroscience, Cells
  • News

    Alzheimer’s protein can travel from blood to build up in the brain

    An Alzheimer’s-related protein can move from the blood to the brain and accumulate there, experiments on mice show for the first time.

    The results, published online October 31 in Molecular Psychiatry, suggest that the protein amyloid-beta outside the brain may contribute to the Alzheimer’s disease inside it, says Mathias Jucker, a neurobiologist at the University of Tübingen in Germany....

    11/06/2017 - 06:00 Neuroscience, Physiology
  • Reviews & Previews

    Invasive species are a growing global threat

    The Aliens Among UsLeslie AnthonyYale Univ. Press, $30

    Remote Bouvet Island, a tiny, glacier-smothered landmass in the South Atlantic rimmed by 500-meter-tall cliffs, has a notable distinction: It’s the only known spot on Earth, scientists say, that has zero invasive species. Every other place, and every person, on the planet is at least indirectly affected by one or more species...

    11/05/2017 - 07:00 Ecology, Animals, Plants