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http://www.sciencenews.org/view/issue/id/2099
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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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October 20th, 2001
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The first systematic survey of crevices inside Red Sea reefs reveals abundant filter feeders that may capture significant nutrients for the reef. (p. 244)
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The 2001 Nobel Prize in Chemistry honors research that led to new chemicals, materials, and drugs, including widely used heart medicines. (p. 244)
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A diminutive lemur species inhabited what is now central Pakistan about 30 million years ago, a new fossil find suggests. (p. 245)
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Changes in regional climate brought about by large-scale deforestation in the eastern lowlands of Central America are affecting weather in the mountains downwind, imperiling ecosystems there. (p. 245)
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Three studies appear to tie livestock growth promoters to risk of serious human disease. (p. 246)
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Doctors should not use antibiotics prophylactically against anthrax unless there is good reason to believe the individual had encountered the germs directly, the American Medical Association advises. (p. 246)
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A hormone known for its involvement in the brain's response to stress also plays a key role in shielding the developing embryo from its mother's immune system. (p. 247)
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Pregnancy hormones may prime breast cells to maintain a supply of p53, a cancer suppressor protein, thus accounting for why women who have undergone pregnancy generally have a lower breast cancer risk than do others. (p. 247)
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Excavations at North America's largest Kitter Litter mine have yielded fossils of ancient aquatic reptiles, as well as evidence of a tsunami generated by the extraterrestrial impact that killed off the dinosaurs about 65 million years ago. (p. 248)
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Newly discovered fossil skulls of juvenile Triceratops may help reveal how the dinosaurs grew their three trademark horns. (p. 248)
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A tangled heap of bones and bone fragments in the bottom of an unhatched elephant bird egg may soon be reassembled into a model of the long-dead embryo, thanks to high technology—and scientists won't even have to crack open the egg to do it. (p. 248)
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Small particles trapped in minuscule cracks or pits in the teeth of plant-eating dinosaurs could give scientists a way to identify the types of greenery the ancient herbivores were munching. (p. 248)
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Researchers have tailored molecules so that they self-assemble into predictable shapes on a gold surface. (p. 249)
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Chemical engineers have created a new type of durable membrane from whey protein, a natural component of milk. (p. 249)
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Scientists studying the data on animal cloning argue that cloning a person would be unsafe. (p. 250)
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An international team used cells from recently dead ewes of the rare mouflon sheep to clone a lamb. (p. 252)
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Invading Argentine ants may reshape the plant composition of the South African fynbos ecosystem because the newcomers don't disperse seeds. (p. 252)
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Some scientists suggest that a better understanding of hair biology might not only lead to new treatments for people with too little (or too much) hair but also shed light on cancer, the growth and development of bodily organs, and other matters. (p. 254)
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