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http://www.sciencenews.org/view/issue/id/1659
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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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June 2nd, 2001
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New calculations show that a basic tenet of chemistry is wrong: Ethane forms its most stable structure not due to so-called steric effects, but because of a quantum mechanical influence. (p. 340)
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A study of HIV-infected mothers in Kenya suggests that breast-feeding places them at a health risk. (p. 340)
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Sticky ant and bee footpads retract and unfold in time with insect steps, so the insects don't trip over their own sticky feet. (p. 341)
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Measurements with a magnetometer aboard the NEAR-Shoemaker spacecraft a few days after it landed on the asteroid 433 Eros confirmed a major puzzle: The rock has no detectable magnetic field. (p. 341)
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Hatchery fish appear to be replacing wild salmon populations in the Columbia River. (p. 342)
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Researchers have uncovered genetic variations controlling a calorie-draining spigot in the body. (p. 342)
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Teenagers diagnosed with attention-deficit hyperactivity disorder may reap substantial academic benefits from treatment that combines behavioral training with low doses of stimulant medication. (p. 343)
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The largest review yet of wild parrot nesting finds poaching worrisomely frequent but also sees cause for hope in the efects of a U.S. protection law. (p. 343)
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The United States joined 126 other nations in signing a treaty to ban or phase out a dozen persistent and toxic pollutants. (p. 343)
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Human breast milk inhibits the growth of yeast spores, the source of the painful fungal infection of the mouth and throat that can be deadly for infants with AIDS. (p. 344)
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More than half of 68 dollar bills collected at a high school sporting event and a grocery store in Ohio hosted bacteria that commonly infect poeple in hospitals or those with depressed immune systems. (p. 344)
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Remarkable already for being a semiconductor and, perhaps, an explosive, a new, solid form of nitrogen made by crushing the ordinary gas to the highest pressures ever also stands out because it continues to survive when the pressure is released. (p. 349)
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A new, stretchy type of liquid-crystal component makes it possible to change a laser's color by simply pulling on the membrane—a much easier, cheaper means of adjustment than that used for today's complex and expensive tunable lasers. (p. 349)
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The fossils of ancient children may provide insights into the evolution of modern Homo sapiens. (p. 346)
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X-ray crystallography shows that statins impede the build-up of cholesterol by physically blocking the binding site of an enzyme important for cholesterol production. (p. 349)
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Where cancer goes, where it grows, and why. (p. 350)
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Precooking servings to sublethal temperatures before the final cooking actually makes germ killing more difficult. (p. 344)
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Clinicians' standard methods don't detect the dormant phase of a bacterium that commonly causes urinary tract infections in women. (p. 344)
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