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http://www.sciencenews.org/view/issue/id/1791
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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 14th, 2001
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Scientists have found 5.2- to 5.8-million-year-old fossils in Ethiopia that represent the earliest known members of the human evolutionary family. (p. 20)
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The discovery of a disparity in decays of subatomic particles known as B mesons and anti-B mesons sheds light on how matter and antimatter differ but deepens the mystery of why matter predominates in the universe today. (p. 20)
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The discovery of a new type of hydrothermal vent system on an undersea mountain in the Atlantic Ocean suggests that submarine hydrothermal activity may be much more widespread than previously thought. (p. 21)
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Researchers have created new coatings that break down toxins and keep mirrors from fogging when the materials are exposed to visible light. (p. 22)
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Scientists have discovered a molecular clock that keeps the circulatory system in sync with the rest of the body, and they show it's regulated by vitamin A. (p. 22)
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Tests for genetic variations of a key protein on platelets, the cell-like blood components that form clots, and their propensity to clump could help physicians determine optimal medication for heart disease patients. (p. 22)
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The side-effects of radiation therapy may result from initial damage to blood vessels. (p. 23)
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A test of starling's tails in a wind tunnel suggests that the standard practice of extrapolating bird tail aerodynamics from delta-wing aircraft may be a mistake. (p. 23)
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A new model that includes a forest's effect on regional climate shows that the Amazon rainforest could disappear in the next three decades, much more rapidly than previously expected. (p. 24)
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A new analysis of water quality downstream of Atlanta shows that some pollutants from the city are still detectable in the river more than 500 kilometers away. (p. 24)
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If a nuclear explosion were set off in a cavity of the right size and shape, even a moderate-sized nuclear bomb might appear at long distances to be no bigger than a routine explosion used in mining. (p. 25)
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Bacteria find strength in numbers as members of huge, mucous-covered communities called biofilms that can stall, equip, and initiate fierce infections. (p. 28)
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Lack of sleep makes healthy adults somewhat resistant to the effects of the hormone insulin, suggesting it could predispose people toward type II, or adult-onset, diabetes. (p. 31)
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Insulin injections failed to prevent type I, or juvenile-onset, diabetes from developing in children and young adults predisposed to the disease. (p. 31)
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People with the skin disorder psoriasis respond well to infliximab, a drug normally given to arthritis patients. (p. 31)
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Marijuana seems to heighten the risk of heart attack in some people during the hour after which it is smoked. (p. 31)
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A cognitive neuroscientist describes how the brain has adapted to reading and what can cause reading...
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A cognitive neuroscientist describes how the brain has adapted to reading and what can cause reading...
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