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http://www.sciencenews.org/view/issue/id/4651
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In This Issue
- It’s written all over your face: To potential mates, your mug may reveal more than you think
- Team spirit: Working together, bacteria and other microbes can accomplish much more than they can alone. Now scientists hope to harness that ability by engineering their own microbial consortia.
- For a big view of inner Earth, catch a few…Geoneutrinos
- This week's table of contents
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January 24th, 2004
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A study in mice with a disease resembling Huntington's shows that a simple sugar impedes the protein aggregation that kills brain cells. (p. 51)
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Spirit, the rover that landed on Mars on Jan. 3, last week began studying the rocks and soil at its landing site. (p. 51)
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Genetic mappers say that the papaya plant has a rudimentary Y chromosome, the youngest one in evolutionary terms yet found, offering a glimpse of the evolution of sex chromosomes. (p. 52)
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Compounds that free cancer cells to commit suicide slow tumor growth. (p. 53)
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In two separate studies, researchers found that a specific sleep stage may amplify recent memories and that sleep can inspire problem-solving insights. (p. 53)
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Tiny airborne particles can apparently infiltrate the brain by shimmying up the nerve that governs smell. (p. 54)
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New computer simulations suggest that hydroplaning may be responsible for the unexpectedly large distances traversed by some undersea avalanches. (p. 54)
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The discovery of humanlike genes in coral means that the common ancestor of both humans and coral was more complex than previously assumed. (p. 55)
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Modern excavations at the La Brea tar pits are revealing a wealth of information about local food chains during recent ice ages, as well as details about what happened to trapped animals in their final hours. (p. 56)
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Scientists have tracked the weirdness of water to microscopic arrangements of molecules and perhaps to the existence of a second, low-temperature form of the familiar substance. (p. 58)
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Chemical analyses of South African sediments suggest that oxygen was present in small quantities about 2.32 billion years ago, which is at least 100 million years earlier than previously thought. (p. 61)
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High concentrations of chlorinated organic contaminants in farm-raised Atlantic salmon may warrant limiting consumption of the otherwise-healthful fish to no more than once per month. (p. 61)
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Astronomers have found what may be the heaviest, biggest, and brightest star ever observed. (p. 61)
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Rather than being a potential antitumor agent, arsenic may actually help a tumor's supporting network of blood vessels thrive. (p. 61)
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Expected increases in global temperature could eradicate from a sixth to a half of the plant and animal species across large areas of the globe, a new analysis suggests. (p. 62)
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Electrically conducting carbon nanotubes could be the ideal material for probing the brain and treating neural disorders. (p. 62)
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Wasabi and horseradish trigger the same pain-signaling receptor on nerve cells. (p. 62)
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A sweat-sensing cell-surface protein allows female mosquitoes to target human skin. (p. 62)
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Letters from the Jan. 24, 2004, issue of Science News. (p. 63)
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