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http://www.sciencenews.org/view/issue/id/4993
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In the December 5 Issue:
- TABLE OF CONTENTS
- Climate might be right for a deal: Copenhagen negotiations will take steps toward a climate-stabilizing treaty
- Botanical Whales: Adventures in the Tortugas reveal that seagrass fields need saving too
- Breaking the Speed Limit: Studies examine physiology and technology to better foresee the ultimate edge of human performance
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May 8th, 2004
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Children who are deficient readers show improvement in both reading skills and brain function when given intensive instruction in how written letters correspond to speech sounds, a brain-imaging study finds. (p. 291)
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Scientists have identified formicine ants as a food source from which poison frogs acquire their chemical weapons. (p. 291)
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Excavations in Germany have yielded the only known fossils of hummingbirds from the Old World and by far the oldest such fossils unearthed anywhere. (p. 292)
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Researchers have now revealed details of the biochemical signals that drive muscle atrophy. (p. 292)
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A concoction based on green tea may speed up manufacturing of precision components for computer hard-disk drives while reducing toxic wastes. (p. 293)
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Umbilical cord blood transplants boost overall health and survival in patients with the rare hereditary condition called Hurler's syndrome. (p. 293)
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The first clear picture of the immediate surroundings of a supermassive black hole confirms that these gravitational monsters hide behind thick belts of dust. (p. 294)
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The limited success of attempts to treat Alzheimer's disease with several compounds that appear able to prevent the disorder suggests that the window for derailing the development of the illness may close years before cognitive decline becomes evident. (p. 296)
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Scientific opinions differ about whether evidence on delayed maturation of the adolescent brain should be used to argue that teenagers have reduced culpability for crimes and thus should be exempt from the death penalty. (p. 299)
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In disagreement with prior findings, an analysis of new quasar observations indicates that alpha, the universal constant that defines the strength of the electromagnetic force, has not varied since the early days of the cosmos. (p. 301)
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Uganda has shown remarkable progress against HIV, the AIDS virus. (p. 301)
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Chronic vibrations of the hands can distort and twist some arterial cells to the breaking point, animal research indicates. (p. 302)
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Scientists scanning satellite images of the southern Sahara have detected trails left on the landscape by the whirlwinds commonly known as dust devils. (p. 302)
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The brains of tone-deaf people may be unable to detect subtle shifts in pitch, which keeps them from learning the basic structure of musical passages. (p. 302)
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High humidity can boost the chances of needing follow-up surgery after LASIK surgery for nearsightedness. (p. 302)
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(p. 303)
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Reading in the Brain: The Science and Evolution of a Human Invention
A cognitive neuroscientist describes how the brain has adapted to reading and what can cause reading...
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A cognitive neuroscientist describes how the brain has adapted to reading and what can cause reading...
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