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http://www.sciencenews.org/view/issue/id/6466
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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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August 13th, 2005
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The incidence of non-melanoma skin cancers in young adults is mushrooming, possibly heralding an epidemic in follow-up cancers during the coming decades. (p. 99)
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Scientists have singled out microorganisms that appear to be largely responsible for natural emissions of the greenhouse gas methane from rice paddies. (p. 99)
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Two new species of lemur have been discovered in Madagascar, the only home of these tiny and endangered primates. (p. 100)
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Tiny radio circuits cheap enough to be embedded into countless products have moved closer to reality with the development of a fast, plastic semiconductor diode. (p. 100)
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Astronomers have for the first time discovered an asteroid with two moons, an indication that the rock is highly porous. (p. 101)
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The brown dog tick is capable of spreading the bacterium that causes Rocky Mountain spotted fever. (p. 101)
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Elderly people may die in their sleep because they gradually lose brain cells that control breathing. (p. 102)
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The more that paleontologists scrutinize some dinosaurs' plates, frills, and other anatomical oddities, the more they suspect that the rationale behind these features is simply the need to be recognizably different. (p. 103)
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The largest computer simulation of the universe ever compiled uses dark matter to shed light on the formation of galaxies and on the visible structure of the universe. (p. 104)
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Two independent research teams have found that fungi can kill mosquitoes or reduce the efficiency with which they transmit the malaria parasite. (p. 106)
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Astronomers have found a group of complex organic compounds, polyaromatic hydrocarbons, from a time when the universe was less than one-third its current age. (p. 109)
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Infants born to women who developed posttraumatic stress disorder during pregnancy have unusually low concentrations of the hormone cortisol. (p. 109)
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Newborns in intensive care units absorb high concentrations of a potentially toxic phthalate from the plastic tubing and other equipment used in treating them. (p. 109)
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The FDA has announced its intent to ban an antibiotic used by poultry farmers because of concerns that continued use of the drug could make it harder to successfully treat food poisoning in people with products from the same class of antibiotics. (p. 110)
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By separating flakes of single-layer crystals from several ordinary materials, physicists have discovered what may be both the world's thinnest materials and a technologically promising new class of substances. (p. 110)
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Carbon nanotubes can outdo the extraordinary sticking power of a gecko's foot hairs. (p. 110)
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A calculation of the health impacts from the use of depleted uranium in antitank munitions projects small increases in the risk of lung cancer and colon cancer, but only for the most heavily exposed individuals. (p. 110)
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(p. 111)
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