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http://www.sciencenews.org/view/issue/id/7885
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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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October 28th, 2006
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Scientists have officially unveiled the DNA code of the western honeybee, the first genome to be sequenced for an animal with ultrastratified societies. (p. 275)
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A long-term study indicates that 3- to 5-year-olds with attention-deficit hyperactivity disorder who are prescribed the stimulant Ritalin often show behavioral improvements but also display greater sensitivity to the drug's side effects than older children do. (p. 275)
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Damage in the fossil tusks of male mastodons suggests that the creatures engaged in fierce combat with rival males at a certain time of year each year of their adult lives. (p. 276)
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Computed tomography (CT) scans seem to catch lung cancer early in smokers, but questions remain about the screening procedure. (p. 277)
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Novel heart devices fashioned mainly from materials that the body can absorb or break down have made their debut in heart patients. (p. 277)
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Fatty tissue may secrete substances that make it harder for the body to battle cancer. (p. 277)
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Antique whale oil shows that some mysterious compounds that resemble DDT and PCBs are naturally produced. (p. 278)
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Common wisdom dictates that playing dead discourages predators, but researchers are now thinking harder about how, or whether, that strategy really works. (p. 280)
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Dust devils send prodigious amounts of dust into Earth's atmosphere, and on Mars the electric fields generated by the dusty vortices may actually stimulate changes in atmospheric chemistry that sterilize the soil. (p. 282)
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Astronomers have measured the temperature variation between the lit and unlit sides of a planet outside the solar system. (p. 285)
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Researchers have sequenced the smallest genome yet discovered, a string of DNA belonging to a species of bacterium that lives inside sap-eating insects' guts. (p. 285)
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A few minutes of exposure to a magnetic or electric field sharply reduces crude oil's viscosity for hours at a time. (p. 285)
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There's no photo, but a team of ornithologists says that its sightings suggest that a few ivory-billed woodpeckers still live along the Choctawhatchee River in Florida. (p. 285)
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Texas has been hit with the first-ever outbreak of dengue hemorrhagic fever in the continental United States. (p. 286)
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Babies younger than 6 months appear fully capable of responding to a flu shot. (p. 286)
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By using DNA from the bacterium Clostridium difficile, scientists have fashioned a vaccine against the microbe. (p. 286)
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Travelers to Mexico who get diarrhea are more likely than healthy travelers to have a particular variant form of the gene for the glycoprotein lactoferrin. (p. 286)
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(p. 287)
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