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http://www.sciencenews.org/view/issue/id/5356
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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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August 28th, 2004
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A new method for growing silicon carbide eliminates crystal defects that have long prevented the compound's wider use in electric devices. (p. 131)
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Use of herbicides containing glyphosate can drive evolution in the tall morning glory, even though the weed must simultaneously sacrifice a measure of its fertility. (p. 131)
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Trained on Cassiopeia A for 11.5 days, NASA's Chandra X-ray Observatory has taken the most detailed portrait ever recorded of any supernova remnant. (p. 132)
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Psychotherapy delivered over the telephone shows promise as a depression treatment when offered in conjunction with prescribed antidepressant medication. (p. 132)
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The gargantuan volumes of meltwater that boosted sea levels during the most recent round of ice ages derived equally from ice sheets in the Northern and Southern Hemispheres. (p. 133)
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Recreational fishing isn't just a tiny, harmless nibble on saltwater-fish populations. (p. 133)
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Shutting down an enzyme can slow the spread of cancer in mice. (p. 134)
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The mathematics used to describe diffusion can also be used to generate maps based on population data. (p. 136)
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Wildfire smoke by itself, without help from heat, can trigger germination in certain seeds, but just what the vital compound in that smoke might be has kept biologists busy for years. (p. 138)
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Scientists have announced a 4-year, $21.6-million design-and-construction effort to replace the aging research submersible Alvin. (p. 141)
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Data from mice subjected to constant illumination suggest that artificial light may increase risks of lung and liver cancers and leukemia. (p. 141)
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A recently identified brain hormone increases wakefulness and appears to suppress fear when it's injected into rodents. (p. 141)
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DNA analysis suggests that Australia got its famous dingoes from a very few dogs brought along with people fanning out from East Asia some 5,000 years ago. (p. 141)
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The B vitamin niacin may protect people against Alzheimer's disease and other forms of mental decline. (p. 142)
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The heat-tolerant algae that live symbiotically within some corals may enable their hosts to adapt to the warmer water temperatures projected to accompany long-term climate change. (p. 142)
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Images taken by the Mars Global Surveyor suggest that most areas with geological features known as patterned ground appear at high latitudes. (p. 142)
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Kinship by itself can't explain the vigilante justice of some ant, bee, and wasp workers. (p. 142)
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