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http://www.sciencenews.org/view/issue/id/2278
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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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December 15th, 2001
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By adding a useful gene to offset the effects of a faulty one, scientists have devised a gene therapy that prevents sickle-cell anemia in mice. (p. 372)
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A participant in the Great Internet Mersenne Prime Search set the record for the largest known prime number, which runs to 4,053,946 decimal digits. (p. 372)
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In warmer-than-normal conditions, fruit flies that overproduce a protein-repair enzyme live about one-third longer than typical flies. (p. 373)
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By reliably emitting just one photon when excited by just one voltage pulse, a sophisticated takeoff on a common class of tiny lamps called light-emitting diodes, or LEDs, may help usher in exotic technologies that rely on quantum mechanics, including quantum cryptography and quantum computers. (p. 373)
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A biological signal of seasonal change, similar to that observed in many mammals, appears to trigger recurring cases of winter depression. (p. 374)
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Researchers report that easily broken bonds in collagen may help prevent bones from easily fracturing. (p. 374)
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A study of 3,700 leaf remnants from crows making tools suggests that the birds prefer to work "right-handed." (p. 375)
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A dash of serendipity led to the discovery of a new protein, produced by most strains of the influenza A virus. (p. 375)
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The analysis of fossils that preserve evidence of diseases that appear to be similar or identical to afflictions that strike modern animals, including humans, could help scientists better grasp the causes and courses of today's ailments. (p. 376)
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Understanding what early, rudimentary burials meant to modern humans' antecedents—assuming early humans did, in fact, bury their dead—could help anthropologsts untangle a lasting mystery of human evolution. (p. 380)
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As late as age 18 months, foster infants quickly develop a secure relationship with a nurturing foster mother. (p. 382)
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A brain structure called the amygdala may play an influential role in severe cases of childhood anxiety and depression. (p. 382)
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Controversial brain-imaging data suggest that the right side of the brain contributes to the grammatical skills of people who grow up using sign language. (p. 382)
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Researchers have found the nutrient sources for fungi that caused the decay of much of King Midas' tomb and its contents. (p. 383)
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Scientists have created a compound that delivers a more potent version of the cooling sensation of menthol, without the minty taste or smell. (p. 383)
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The techniques used in developing nations to transform wood into charcoal are net emitters of greenhouse gases, even though the wood used to produce the fuel removed globe-warming carbon dioxide from the atmosphere as it was growing. (p. 383)
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A huge crack across the floating portion of an Antarctic glacier has cleaved the ice shelf and spawned a new iceberg much more quickly than scientists had expected. (p. 383)
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A cognitive neuroscientist describes how the brain has adapted to reading and what can cause reading...
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A cognitive neuroscientist describes how the brain has adapted to reading and what can cause reading...
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