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http://www.sciencenews.org/view/issue/id/3772
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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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April 19th, 2003
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Researchers have developed a new method or making titanium-based alloys with many qualities far superior to those in any alloy previously known. (p. 243)
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A new computer simulation predicts that neutron irradiation of graphite displaces atoms and bonds in unexpected ways. (p. 243)
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Minuscule samples of sediment from New Zealand and Siberia have yielded bits of DNA from dozens of animals and plants, including the oldest DNA sequences yet found that can be traced to a specific organism. (p. 244)
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A brain structure called the hippocampus may crucially influence memory for both factual information and personally experienced events. (p. 244)
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By examining specific types of long-lasting genetic rearrangements in blood cells, researchers have found a way to measure a person's past exposures to plutonium radiation. (p. 245)
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An international consortium of scientists announced that the deciphering of the human genetic code is now truly complete. (p. 245)
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Bathing surviving dopamine-making neurons with a natural protein that induces nerve-fiber growth reverses some of the symptoms in Parkinson's disease patients. (p. 245)
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Bluegill sunfish have provided an unusually tidy test of the much-discussed prediction that animal dads' diligence in child care depends on how certain they are that the offspring really are their own. (p. 246)
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In the 50 years since the discovery of DNA's double helix structure, scientists have developed striking new ways to visualize the molecule. (p. 248)
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New studies explore people's tendency to have trouble recalling faces or other hard-to-describe perceptions after giving verbal accounts of them, with an eye toward improving police interviewing techniques with crime eyewitnesses. (p. 250)
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Researchers have dramatically slowed light within a solid at room temperature. (p. 252)
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An immune therapy prevents allergic reactions to the sting of the jack jumper ant, a pest common to Australia. (p. 252)
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Light from the outburst of a star has revealed its dusty surroundings. (p. 252)
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By sparking thermonuclear reactions, a machine called Z has joined the big leagues among potential technologies for producing power from controlled nuclear fusion. (p. 252)
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Fatal heart attacks that recently struck two people after they were vaccinated against smallpox were probably unfortunate coincidences, not adverse consequences of vaccination. (p. 253)
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A vaccine-resistant and previously rare strain of deadly bacteria caused an epidemic of meningitis last year in western Africa and seems to have disseminated around the world. (p. 253)
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Donated blood and organs should be screened to prevent transmission of West Nile virus, federal officials say. (p. 253)
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A CDC investigator has linked an outbreak of skin infections to unsanitary practices at a body wrap salon. (p. 253)
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Relevant hand gestures make a speaker's words more memorable to listeners, whereas inappropriate hand gestures undermine recall for what was previously said. (p. 254)
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Structures in the brain's left hemisphere coordinate the ability to use familiar tools such as hammers and saws. (p. 254)
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