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http://www.sciencenews.org/view/issue/id/8295
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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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March 10th, 2007
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Some animals live longer on reduced-calorie diets, and in a recent experiment people on such diets had many of the cellular changes that those long-lived animals did. (p. 147)
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A new test offers the best evidence yet that cowbirds retaliate against birds that resist their egg scams. (p. 147)
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Antipsychotic drugs exert disappointingly modest effects on the quality of life of people with schizophrenia, although a new cognitive-training program shows promise as a way to get these psychiatric patients into the workforce. (p. 148)
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Sailing high above Saturn's equator, NASA's Cassini spacecraft took the most sweeping views of the planet's icy rings ever recorded. (p. 148)
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White adolescents who have frequent exposure to television and R-rated movies are more likely to try smoking than are their peers with less exposure to these media. (p. 149)
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Trends seen in meteorological data gathered on a Chinese mountaintop suggest that air pollution reduces the amount of precipitation that falls in high-altitude regions. (p. 149)
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Mathematicians have solved a legendary Indian mathematician's final problem. (p. 149)
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A blocky, bright-yellow robot that would look at home in a toy chest moves like a salamander, just as its inventors intended. (p. 150)
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Scientists and engineers are investigating how to stem the flow of naturally-occurring and synthetic estrogens that, when released from waste water treatment plants and livestock operations, can harm aquatic life. (p. 152)
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The world's warming climate, as well as ecological shifts in the timing and frequency of wildfires in boreal forests, pose an increasing threat to Arctic permafrost. (p. 154)
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Survivors of a childhood cancer face a sixfold risk of developing a new cancer later in life, compared with people in the general population. (p. 157)
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New images of ancient cracks on Mars suggest that liquid may have percolated through underground rock on the Red Planet, providing a possible habitat for primitive life. (p. 158)
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Scientists tracked the origin of an illegal ivory shipment to Zambia by using an improved DNA-analysis technique to study the confiscated tusks. (p. 158)
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Ancient Americans cultivated and ate chili peppers at least 6,100 years ago, setting the stage for the spicy condiment to spread throughout the world after Columbus' voyages to the New World. (p. 158)
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When it comes to athletic performance, we're all night owls, a new study suggests. (p. 158)
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(p. 159)
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