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http://www.sciencenews.org/view/issue/id/1831
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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, 2001
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Small rings of amino acids can self-assemble into tubes that punch holes in bacteria. (p. 52)
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Electronics components made of Portland cement may one day be part of buildngs and roadways that double as gargantuan sensors or other current-carrying devices. (p. 52)
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The largest dust storm observed on Mars in 25 years is now engulfing the Red Planet. (p. 53)
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In a new twist on how life forms can exploit each other and with implications for how complex cells originated, scientists have discovered one bacterium living inside another. (p. 53)
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A molecule patterned after part of the parasite that causes most severe malaria induces a strong immune response in people. (p. 54)
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Deaf children in Nicaragua display evidence of having created a fully grammatical sign language on their own in under 2 decades. (p. 54)
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Negotiators, without U.S. representatives' input, resolved controversies in Bonn that were blocking an international treaty to limit greenhouse gases. (p. 54)
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Mites fossilized in cave formations in the American Southwest show that at times during the past 3,200 years the climate there was much wetter and cooler. (p. 55)
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Researchers have identified a particular exhalation that dogs make while playing as a possible counterpart to a human laugh. (p. 55)
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The sharpest radar image ever of an asteroid shows features on 1999 KW4 as small as 7.5 meters—about the length of a stretch limo. (p. 57)
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A government-sponsored study says the U.S. Army may benefit from advances in biotechnology during the next 25 years, including sensors that identify soldiers by the food they ate, protein-based computers, near-instant vaccines, and automated wound treatments. (p. 57)
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A coating of water-repellent powder transforms water droplets into remarkably mobile and resiliant balls, hoops, or peanut-shaped blobs. (p. 57)
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Autoimmune diseases are more common in women than in men, and researchers are beginning to tease out the cellular mechanisms that may be responsible for this phenomenon. (p. 58)
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Mounting evidence that many asteroids aren't solid rock but collections of loosely bound fragments could have far-reaching implications for elucidating their internal structure, understanding planet formation, and developing strategies to mitigate the threat of one striking Earth. (p. 61)
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