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http://www.sciencenews.org/view/issue/id/8798
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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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August 11th, 2007
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A protein made by bone cells has a surprising influence on energy metabolism, and could have a role in treating diabetes. (p. 83)
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A Wyoming population of endangered black-footed ferrets, started from captive-bred animals, has survived difficulties and is doing well. (p. 83)
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Early exposure to bisphenol A, a building block of polycarbonate plastics, can trigger a variety of later health problems. (p. 84)
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Amyloid-beta, the protein fragment implicated in Alzheimer's disease, may also play a role in glaucoma. (p. 84)
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A treatment plant in India that processes waste from drug factories feeds enormous amounts of antibiotics and other drugs into local waterways. (p. 85)
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A gene variant that increases the risk for attention deficit-hyperactivity disorder in young children also helps the problem resolve by the teen years. (p. 85)
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An experiment devised by Isaac Newton inspires a modern successor, in which X rays capture the image of a microscopic explosion. (p. 86)
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Vaccines that train a person's immune system to kill cancerous cells, when combined with drugs that block tumor defense mechanisms, are starting to show promise. (p. 88)
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Sawfish, shark relatives that almost went extinct several decades ago, have now gained protection by international treaty. (p. 90)
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Two sturdy NASA spacecraft have new assignments, studying comets and looking for exoplanets. (p. 93)
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Nanoparticles in diesel exhaust can activate genes that worsen cholesterol's damaging effects. (p. 93)
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Disabling a chemical-sniffing organ crucial for courting behavior makes girl mice act like frisky boys. (p. 93)
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CT scans are increasingly used to investigate heart blockages, but their X rays can increase cancer risk. (p. 93)
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The layers of carbon atoms that form graphite can be assembled into strong but flexible "graphene paper." (p. 94)
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Many X ray sources in the sky could be active galactic nuclei smothered by gas and dust that blocks their emission of visible and ultraviolet light. (p. 94)
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Measuring household radon levels in summer may give misleadingly low results. (p. 94)
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Workers who rotate between day and night shifts have less of the brain chemical serotonin than day shift workers do. (p. 94)
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(p. 95)
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