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http://www.sciencenews.org/view/issue/id/7305
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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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May 6th, 2006
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About 76 percent of a commonly used antimicrobial agent exits sewage-treatment plants as a component of the sludge that's often used as a farm fertilizer. (p. 275)
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Bones from a spinal column discovered at a nearly 1.8-million-year-old site support the controversial possibility that ancient human ancestors spoke to one another. (p. 275)
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Pied flycatcher numbers are dwindling in places where climate change has knocked the birds' migration out of sync with the food-supply peak on their breeding grounds. (p. 276)
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Exposure to the main ingredient of polycarbonate plastics can alter brain formation in female mouse fetuses and make the lab animals, later in life, display a typically male behavior pattern. (p. 276)
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Scores of telescopes are watching the continuing breakup of a comet as it nears the sun. (p. 277)
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A single injection of an experimental vaccine prevents infection by the lethal Marburg virus in monkeys. (p. 277)
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The embryonic heart works more like the adult heart than scientists had long assumed. (p. 278)
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Toxicologists and chemists are forging a new field called nanotoxicology as they grapple with assessing the safety of engineered nanoparticles. (p. 280)
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Saturn's moon Enceladus has become the hottest new place to look for life in the chilly outer solar system. (p. 282)
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A jolt of springtime hormones makes a female sparrow's brain more responsive to song. (p. 285)
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Researchers have found evidence of bias when scientists review data and the researcher's name and affiliation are available to the reviewers. (p. 285)
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A commonly prescribed anti-osteoporosis drug works as well at preventing breast cancer as the sole drug currently prescribed for the task. (p. 285)
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Bile, a digestive juice, plays an integral role in the regeneration of liver tissue. (p. 285)
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A female in a species of legless amphibians called caecilians nourishes her youngsters by letting them eat the skin off her back. (p. 286)
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Pairs of tiny gas clouds of unequal energies mixing inside narrow tubes retain their original energy differences. (p. 286)
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Large-scale human trials of new treatments in medicine have the potential to offer huge economic benefits from improved quality of life. (p. 286)
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The same neural circuits that adults use to perform complex calculations are already at work in preschoolers doing basic math. (p. 286)
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(p. 287)
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