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http://www.sciencenews.org/view/issue/id/8337
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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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March 24th, 2007
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The oldest rocks in the world show that Earth's shifting crust began its tectonic movements almost 4 billion years ago. (p. 179)
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A family of chemicals implicated in testosterone declines may also be contributing to recent spikes in obesity and diabetes. (p. 179)
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Invisibility cloaks may be a long shot, but new optical tricks could help in the design of future computers. (p. 180)
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A disproportionate number of heart disease deaths among firefighters occur during blazes. (p. 180)
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Heavy amounts of steroids taken during pregnancy can have long-term deleterious effects on offspring, a study of monkeys shows. (p. 181)
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A new image of the sun's chromosphere, a layer sandwiched between the sun's visible surface and its outer atmosphere, shows a surprisingly complex structure of filaments of roiling gas that promises to shed new light on why the sun erupts. (p. 181)
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For the first time, mosquitoes engineered to resist malaria have shed their underbug image and outperformed regular mosquitoes in a lab test. (p. 181)
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A new study of people who suffered damage to a brain area involved in social sentiments supports the notion that emotional, intuitive reactions typically guide decisions about moral dilemmas. (p. 182)
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Astronomers are investigating how they might jump on NASA's lunar bandwagon, using the moon or its environs to study distant stars and galaxies. (p. 184)
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Controversial new studies report that modern humans from Africa launched cultural advances in Europe at least 36,000 years ago and reached what's now western Russia more than 40,000 years ago. (p. 186)
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The northernmost reaches of Saturn's moon Titan appear to be covered with hydrocarbon lakes or seas that are at least 10 times as large as those predicted by earlier studies. (p. 189)
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Almost one in three veterans of military operations in Afghanistan and Iraq receiving medical care at Veterans Affairs facilities displays mental disorders or less-severe problems that still require mental-health treatment. (p. 189)
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Genetic alterations that occur in children without being inherited from the parents contribute to certain cases of autism and related developmental disorders. (p. 189)
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Babies born prematurely rev up an immune response to two routine childhood vaccines as well as babies who are born full-term. (p. 189)
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Paleontologists have unearthed fossils that provide direct evidence of something scientists had long suspected: The tiny bones in the middle ears of modern-day mammals evolved from bones located at the rear of their reptilian ancestors' jaws. (p. 190)
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Traces of hepatitis B have turned up in the perspiration of wrestlers, suggesting that the virus could spread to their opponents and teammates. (p. 190)
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A century-old system of categorizing the world's climates has been updated to include modern weather data, thereby providing researchers with a tool to better verify results of their computer simulations. (p. 190)
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Variants in a circadian-rhythm gene predict how well people perform mental tasks when sleep deprived. (p. 190)
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(p. 191)
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