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http://www.sciencenews.org/view/issue/id/2632
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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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April 13th, 2002
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Scientists have identified a new class of compounds that stop herpes simplex virus from replicating. (p. 227)
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The distinctive looks and thinking styles of people and chimpanzees derive from the contrasting productivities of their similar DNA sequences. (p. 227)
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New evidence supports the notion that gamma-ray bursts, the most violent explosions in the universe, are the primal calling cards of newborn black holes. (p. 228)
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Experiments with ultrathin organic coatings applied to steel suggest a new technique for slowing corrosion. (p. 228)
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With the help of a molecular mold composed of exactly 188 atoms, researchers have been able to impose textures at an even smaller atomic scale on a metal surface. (p. 229)
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An Australian frog can synthesize its own protective poison, rather than obtain it from the insects it eats. (p. 229)
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Researchers discovered a relative of the blood protein hemoglobin in all the body's tissues. (p. 230)
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The biggest effects of climate change during the next 50 years may not be extinctions but major reshuffling of the species in local communities. (p. 230)
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New techniques and tools are helping scientists elucidate the roles that complex sugars play in the human body and in drug manufacturing. (p. 232)
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New approaches to stopping the introduction by ships of invasive species to North American waters are beginning to show promise but have a long way to go. (p. 234)
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The journal Nature now says it shouldn't have published a report that genetically engineered corn is leaking exotic genes into the traditional maize crops of Mexico. (p. 237)
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A new Web site reviews the accuracy of commonly used middle school physical science books and offers tips and assistance for teachers working from those texts. (p. 237)
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Scientists propose that protein-cleaving enzymes called proteases are the real microbe destroyers in bacteria-killing cells called neutrophils. (p. 237)
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People on kidney dialysis who have high pulse pressure—the difference between the top and bottom numbers on a blood pressure reading—seem to be at a greater risk of dying than those with low pulse pressure. (p. 237)
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Early spring flowers and the sugar maples they grow under use different alarm clocks to get going in the spring, which can make life hard for the flowers in northern forests. (p. 238)
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About 15 million doses of smallpox vaccine held by the U.S. government can be diluted to one-tenth their original concentration and still be effective for immunizing people. (p. 238)
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New data suggest that showering before a swim in the community pool could help limit the formation of toxic chemicals in the water. (p. 238)
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