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http://www.sciencenews.org/view/issue/id/8752
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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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July 28th, 2007
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Obesity spreads as a social contagion through networks of friends and relatives, apparently because associating with overweight people encourages a laxer attitude toward weight gain. (p. 51)
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Childhood exposure to direct sunshine may protect people against developing multiple sclerosis later. (p. 51)
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Increasing ground-level ozone due to pollution will stifle the growth of vegetation in many regions, accelerating the buildup of planet-warming carbon dioxide in the atmosphere. (p. 52)
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A new porous gel efficiently removes mercury from contaminated water and may also have the ability to catalyze chemical reactions such as those that generate hydrogen for fuel. (p. 52)
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A nursing home cat in Rhode Island knows when the end is nigh, predicting with uncanny accuracy when residents will die. (p. 53)
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Water and sugar molecules play a previously unsuspected role in the way that a ubiquitous receptor passes chemical messages between cells. (p. 53)
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Oil poured into a pan of the same liquid drags along a surrounding air layer, which can make it skip in and out of the surface before it mixes in. (p. 54)
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Astronomers' discovery of a rare negatively charged organic molecule sheds light on conditions in interstellar gas clouds, where amino acids, sugars, and other prebiologic compounds form. (p. 54)
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Old-style epidemiology casework combines with an array of 21st-century lab tests in the search for clues to the disappearance of honeybees. (p. 56)
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Computer simulations of blood flow in the heart allow doctors to test surgical innovations before trying them on patients. (p. 59)
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Treating depression with antidepressant drugs reduces the risk of suicide. (p. 61)
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Invading viruses can trick a cell into turning off its defense mechanisms. (p. 61)
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Alaska's northern coast is falling into the sea at an accelerating rate. (p. 62)
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A little moon, two kilometers across, is Saturn's 60th satellite. (p. 62)
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Mice lived longer when they were fooled into sensing lower insulin levels than they actually had. (p. 62)
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Scientists are recruiting online help from the public to classify the shapes of 1 million galaxies in never-before-viewed photographs. (p. 62)
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(p. 63)
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