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http://www.sciencenews.org/view/issue/id/5491
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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 9th, 2004
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Mesh cylinders called stents work as well as or slightly better than surgery in opening blocked carotid arteries in high-risk patients. (p. 227)
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Infrared spectra of a disk of debris surrounding the young star Beta Pictoris reveals three distinct bands of dust, suggesting the location of a possible planet flanked by belts of asteroids or comets. (p. 227)
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On Oct. 4, a privately funded, piloted craft called SpaceShipOne reached a height of 378,000 feet (115.1 kilometers), breaking a world altitude record for rocket-powered planes and claiming the $10 million Ansari X prize. (p. 228)
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Mated pairs of black-tailed godwits may fly off to winter refuges a thousand kilometers apart but can still arrive back at their breeding site the next spring within a few days of each other. (p. 228)
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Nobel prizes in the sciences went to research on olfactory genes, subatomic particles, and the molecular kiss of death. (p. 229)
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A controversial genetic analysis of lice raises the possibility that some type of physical contact occurred between ancient humans and Homo erectus, probably in eastern Asia between 50,000 and 25,000 years ago. (p. 230)
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In urban slums, enhancing family hygiene can prevent about half of childhood diarrhea and respiratory illnesses, including pneumonia, even among infants too young to wash themselves. (p. 230)
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Vitamin D is being linked to a host of health benefits that go well beyond stronger bones, extending to muscle preservation and some protection against cancer, diabetes, and multiple sclerosis. (p. 232)
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Announcements of new targets for genome sequencing are bringing celebrity to lesser-known twigs on the tree of life. (p. 234)
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Astronomers have found a second, colder source of the simple sugar glycoaldehyde in a dust and gas cloud 26,000 light-years from Earth. (p. 237)
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A protein called syncytin might play a role in causing degradation of the fatty myelin sheath that insulates nerves, damage that leads to multiple sclerosis. (p. 237)
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A spike in automobile fatalities in Israel 3 days after each of a recent series of terrorist attacks reflects a delayed, population-wide reaction to those violent incidents, two researchers propose. (p. 237)
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Marrying a saturated fat to the plant-derived ingredient in certain health-promoting margarines creates an especially potent cholesterol-lowering food additive. (p. 238)
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Curcumin, the component of turmeric that makes the spice yellow, shows anticancer effects in lab-dish tests and in experiments on mice. (p. 238)
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Radioactive beryllium-7 atoms locked inside molecular cages decay extraordinarily quickly. (p. 238)
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The notion that a warmer climate in arctic regions will lead to enhanced carbon sequestration in tundra ecosystems isn't supported by field data. (p. 238)
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