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http://www.sciencenews.org/view/issue/id/4425
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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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November 15th, 2003
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A tiny, newly discovered galaxy being shredded by the gravity of the Milky Way is our galaxy's closest known neighbor, residing just 42,000 light-years from the Milky Way's center. (p. 307)
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Horses that lived in Alaska shrank dramatically in body size before they went extinct at the end of the last ice age. (p. 307)
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The first measurements of how people intrinsically scatter sound waves indicate that, acoustically, a human body resembles a hard ellipsoid of the same height and girth as the person. (p. 308)
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People spontaneously sniff while imagining various smells, an act that intensifies odor perception. (p. 308)
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Researchers have fabricated a memory device that stores data permanently in electrically-conducting polymers. (p. 309)
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A pesticide known to be toxic to the brain may also have subtle effects on heart and liver tissues of animals exposed to this substance during early development. (p. 309)
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A computer analysis suggests that eastern monarch butterflies may not be able to tolerate the increasingly moist climate in Mexico, their current wintering site. (p. 310)
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Snippets of RNA that control biochemical reactions by squelching the creation of specific proteins play a role in the development of leaves. (p. 312)
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Geologists who examine mineral transformations increasingly see bacteria at work, leading the scientists to conclude that if microbes aren't driving the underlying chemical reactions, at least they're taking advantage of the energy that's released. (p. 315)
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An unusually large test of the ecological impact of genetically modified crops finds mixed results, depending on the crop. (p. 317)
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The 5,200-year-old Iceman, whose mummified body was found 12 years ago in the Alps between Italy and Austria, spent his life in the valleys just south of where his body was found, according to chemical analyses of his remains. (p. 317)
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A meshing of family trees provides a rare example of an arms race between toxic Bursera plants and the beetles that manage to eat them anyway. (p. 318)
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Caught in a laser's glare on its maiden launch, a lightweight drone with a solar panel demonstrated that continuous flight powered by ground-based lasers is possible. (p. 318)
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Hepatitis A infections may protect people from allergies and asthma. (p. 318)
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On Oct. 28, the Saturn-bound Cassini spacecraft recorded the radio wave "sound" of a powerful solar flare as it raced toward Earth. (p. 318)
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Letters from the Nov. 15, 2003, issue of Science News. (p. 319)
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