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http://www.sciencenews.org/view/issue/id/5218
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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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July 17th, 2004
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Almost half the carbon dioxide produced by human activity in the past 2 centuries is now dissolved in the oceans, resulting in chemical changes that, if unchecked, could threaten some marine ecosystems. (p. 35)
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Weight loss releases toxic chemicals into the bloodstream, which may slow the body's metabolism. (p. 35)
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In rats, mothering styles set the genetic stage for a pup's lifelong responses to stressful situations. (p. 36)
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At extremely high temperatures and pressures, nitrogen gas assumes a three-dimensional crystal structure called polymeric nitrogen, a long-sought energy-storage material. (p. 36)
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Scientists have observed a single electron's magnetism. (p. 37)
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A new drug for treating chronic myeloid leukemia that is resistant to the frontline drug imatinib shows promise in mouse tests. (p. 38)
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During their fall migration season, white-crowned sparrows sleep only about a third as much as they do at other times of the year without becoming slow-witted. (p. 38)
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Although low-carbohydrate diets can be powerful weight-loss tools, many physicians now conclude they aren't for anyone who isn't under a doctor's watchful eye. (p. 40)
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Materials scientists are trying to coerce diatoms into making silicon-based microdevices with specific features. (p. 42)
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The United Nations enacted a new international treaty to halt the erosion of genetic diversity of crops. (p. 45)
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Gold blobs grown onto the ends of tiny, rod-shaped crystals provide potential points for electric contact and chemical liaisons that could enable such semiconductor bits to self-organize into complex circuits or structures. (p. 45)
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Reading peer-reviewed journals remains a primary means by which researchers stay on top of developments in their fields, but the annual costs for these periodicals are steep. (p. 45)
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Four people who received tissue transplanted from a man who had died from an undiagnosed rabies infection have since themselves died from the same incurable neurological disease. (p. 45)
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Arsenic gets into groundwater largely through the action of bacteria residing in aquifer sediments. (p. 46)
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By coaxing five quantum particles into a state of entanglement, physicists have taken an important step toward dependable quantum computers and more-versatile schemes for transferring quantum information. (p. 46)
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The first-ever private, manned space mission occurred on June 21. (p. 46)
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Women compensate for the smaller overall volume of their brains by squeezing more folds into some of the space than men do. (p. 46)
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(p. 47)
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