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http://www.sciencenews.org/view/issue/id/2504
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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 2nd, 2002
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Tyrannosaurus rex, a bipedal meat eater considered by many to be the most fearsome dinosaur of its day, may not have been the swift Jeep-chaser portrayed by Hollywood. (p. 131)
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Among bereaved spouses tracked for up to 2 years after their partners' death, those who often talked with others and briefly wrote in diaries about their emotions fared no better than their tight-lipped, unexpressive counterparts. (p. 131)
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If all goes according to plan, astronauts aboard the space shuttle Columbia will embark on the fourth and most technically challenging mission to replace damaged parts and install new detectors on the Hubble Space Telescope. (p. 132)
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A gene that once produced a small protein able to prevent HIV from infecting cells now lies unusable in the human genome. (p. 132)
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An Asian bull elephant just reaching maturity secretes a liquid from glands on its face that smells like honey. (p. 133)
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Researchers have used powerful electric fields to stretch liquids into ultrathin jets in which a stream of one liquid encloses the stream of another. (p. 133)
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New genetic evidence suggests that crabs aren't all close relatives and their characteristic shape evolved independently on numerous occasions. (p. 134)
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Researchers have identified a compound that enables even defective p53 proteins to initiate anticancer chain reactions. (p. 134)
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Researchers are trying to visualize molecular and cellular changes as a cancer responds to therapy in order to predict whether treatments are effective sooner than it's currently possible to determine. (p. 139)
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A birding team searching in Louisiana for the possibly extinct ivory-billed woodpecker heard a promising pattern of taps but did not see the bird or hear it calling. (p. 141)
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Research has linked the incidence of Alzheimer's disease and other forms of dementia to elevated blood concentrations of the amino acid homocysteine. (p. 141)
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Tiny metal clusters used as catalysts are getting so small that presumably inert carrier materials that host them are also getting involved in the reactions. (p. 141)
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Compounds in coffee loosen the grip of bacteria that cause tooth decay. (p. 141)
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Laboratory studies of how snow crystals change shape under fluctuating environmental conditions and computer analyses that match the patterns of past avalanches with detailed meteorological data are helping scientists uncover the secrets of avalanches. (p. 136)
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Although El Niño is often blamed for ill effects that total billions of dollars, a broader analysis suggests that the United States garners substantial benefits during this weather pattern. (p. 142)
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Proteins extracted from winter wheat keep ice cream smooth by preventing ice crystals from growing. (p. 142)
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The Kuna people of Central America appear to keep their blood pressure down by drinking cocoa rich in chemicals called flavanols. (p. 142)
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Paleontologists have unearthed fossils of a tiny crocodile that boasted a smile like no other: The animal had no teeth across the entire front of its mouth. (p. 142)
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