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http://www.sciencenews.org/view/issue/id/3559
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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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February 8th, 2003
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The space shuttle Columbia, which tore apart killing all seven of its crew on Feb. 1 just minutes before it was scheduled to land, may have been doomed since its liftoff. (p. 83)
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Scientists are using glowing tumor cells inside zebrafish to study how cancer spreads. (p. 84)
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A new study downplays the likelihood that people will develop cancer from eating foods naturally tainted with acrylamide, a building block of many plastics and an animal carcinogen. (p. 84)
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Healthy elderly people who experienced difficulty falling or staying asleep die from natural causes at a much higher rate than those who slept well. (p. 85)
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Two cotton-growing centers that could hardly differ more—small farms in India and industrial fields in Arizona—provide case studies that show the bright side of a widespread genetically engineered crop. (p. 85)
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The President's $2.23 trillion federal budget proposal contains nearly $123 billion to fund federal research and development, an increase of about $8 billion over last year’s proposal. (p. 86)
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General anesthetic drugs commonly used in pediatric surgery, when given to baby rats, trigger brain cells to commit a cellular form of suicide that leads to lasting memory and learning deficits. (p. 87)
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Low-carbohydrate diets, such as the Atkins diet, could be more effective for weight loss than low-fat diets are. (p. 88)
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Genghis Kahn's military success 800 years ago may have spread a particular form of the Y chromosome, one he may have himself carried. (p. 91)
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New efforts to probe the biology of intelligence stir up a long-running controversy over what mental tests actually measure. (p. 92)
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Scientists who chase dust devils report that the tiny twisters can produce a small magnetic field that changes magnitude between 3 and 30 times per second. (p. 94)
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Precisely timed electrical discharges in two parts of the brains of sleeping rodents offer clues to how slumber may foster memories of recently learned material. (p. 94)
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A new type of barcode too small to see with the naked eye holds promise for biomedical research, law enforcement, and everyday life. (p. 94)
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Laboratory experiments indicate that using a hands-free cell phone while driving markedly interferes with the ability to maneuver a vehicle safely. (p. 94)
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