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http://www.sciencenews.org/view/issue/id/8137
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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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January 20th, 2007
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Researchers have genetically engineered hens that can not only produce useful drugs in their eggs but also reliably pass on this characteristic to new generations of chickens. (p. 35)
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Astronomers have discovered the first example of a trio of quasars, the brilliant beacons of light that seem to be fueled by supermassive black holes at the centers of galaxies. (p. 35)
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Scientists claim to have found an elusive algal toxin implicated in massive fish kills along the Mid-Atlantic coast in the 1990s. (p. 36)
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Men with short telomeres, the ends of chromosomes, are twice as likely to develop heart disease as are men with longer telomeres. (p. 36)
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A provocative proposal suggests that the U.S. lobster fleet in the Gulf of Maine could reduce the number of traps, maintain its profits, and improve life for endangered right whales. (p. 37)
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A lengthy, newly compiled fossil record of Australian mammals bolsters the notion that humanity's arrival on the island continent led to the extinction of many large creatures there. (p. 38)
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Attempts by family, friends, and others to coerce people with serious eating disorders into getting mental-health care provide a valuable jump-start to treatment. (p. 38)
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Toxicologists risk missing important health effects, both good and bad, if they don't begin regularly probing the impacts of very low doses of poisons. (p. 40)
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Accumulating evidence suggests that urban sprawl discourages physical activity and may thereby contribute to obesity and related health problems. (p. 43)
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Certain areas of North America are particularly susceptible to environmental accumulation of mercury. (p. 45)
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Newly designed nanoparticles could have dual benefits in the fight against cancer. (p. 45)
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Variations in the range of Adélie penguins along one section of Antarctica's coast during the past 45,000 years are a keen indicator of climate change there. (p. 46)
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Preliminary analyses of weather data gathered from more than 1,200 sites across the continental United States indicate that last year was the warmest on record. (p. 46)
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Hamsters and other pet rodents are probably underappreciated spreaders of salmonella bacteria. (p. 46)
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A medication widely used for heart failure may be most effective in people who have a common variant of a particular gene. (p. 46)
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(p. 47)
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