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http://www.sciencenews.org/view/issue/id/8093
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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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January 6th, 2007
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Popular acid-reducing drugs called proton-pump inhibitors may increase the risk of hip fractures in people over 50. (p. 3)
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Chains of tiny, high-precision, light-conducting loops of silicon may open the door to using optical circuits to carry enormous data flows within computer chips. (p. 3)
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Species in one group of insects have escaped the hungry eye of predators by looking like foliage and moving like swaying leaves for at least 47 million years, a new fossil find suggests. (p. 4)
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Scientists have developed a device that filters from blood the mutant proteins that cause the human form of mad cow disease, an advance that may hold promise for increasing the safety of donated blood. (p. 4)
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Astronomers have obtained some of the best evidence yet for an asteroid belt beyond the solar system. (p. 5)
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Gibbons, a line of apes in southeastern Asia, rearrange their songs in order to communicate with one another. (p. 5)
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During breeding season, male fish roll their eyes to send a quick "Back off, punk" signal to other males, researchers say. (p. 6)
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Using a flotilla of spacecraft to study X-ray emissions from the vicinity of black holes, astronomers are nudging ever closer to the whirlpool of activity surrounding these gravitational monsters. (p. 8)
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Concern about honeybee shortages has inspired new interest in bees that lead solitary lives and don't bother storing honey. (p. 11)
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Soldiers and emergency crews may one day find comfort as well as safety in their chemical-protection gear, now that researchers have created a breathable, chemical-blocking composite material. (p. 13)
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U.S. workers put in more hours than most other workers around the world, and one consequence is dramatically higher energy and environmental costs per employee. (p. 13)
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Pieces of moss buried in debris left along the Norwegian coast by an ancient tsunami have enabled geologists to better determine the date of the immense underwater landslide that triggered the inundation. (p. 14)
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The ongoing disappearance of glaciers and other small ice masses worldwide makes a larger contribution to sea level rise than the melting of ice sheets on Greenland and Antarctica does. (p. 14)
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A survey of deep waters in western Lake Superior has revealed the tracks left by massive icebergs scraping bottom there during the last ice age. (p. 14)
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If earthquakes that struck the United States since 1900 are any guide, the nation can expect to suffer seismic damages of about $2.5 billion dollars each year in the future. (p. 14)
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(p. 15)
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