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http://www.sciencenews.org/view/issue/id/9294
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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 19th, 2008
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The rheumatoid arthritis drug etanercept clears up psoriasis in children and may become the first systemic medication for the ailment in youngsters. (p. 35)
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Scientists removed all the cells from a dead rat heart, injected new heart cells, and produced a beating heart, paving the way for eventually growing organs for transplantation in humans. (p. 35)
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Artificial cousins of ball lightning contain microscopic particles, just like a model says they should. With video. (p. 36)
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Rapid industrialization, an increase in population, and a growing dietary preference for meat in China are straining the country's water resources to the point where food imports probably will be needed to meet demand in coming decades. (p. 36)
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Two old stars appear to have been rejuvenated and may be undergoing a new wave of planet formation hundreds of millions to billions of years after young stars normally do. (p. 37)
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Mice with a stretch of bat DNA grow longer limbs, a possible step in the evolutionary path to wings. (p. 37)
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A genetic analysis of syphilis and related bacterial strains from different parts of the world fits the theory that Christopher Columbus and his crew brought syphilis from the Americas to Renaissance Europe, where it evolved into modern strains of the sexually transmitted disease. (p. 38)
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The deepest X-ray portrait ever taken of the galaxy Centaurus A highlights its jets and activity around its supermassive black hole. (p. 38)
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Although the chances of success are far from certain, many desperate horse owners are gambling on stem cell therapy for their injured equine friends. (p. 40)
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Scientists and legal scholars argue that studies conducted with litigation in mind are not necessarily more biased than research done for other purposes. (p. 42)
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Almost one-sixth of the carbon dioxide produced by human activity since the beginning of the Industrial Revolution resulted from the transport of goods and people—an emissions fraction that's increasing by the year. (p. 45)
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Regularly working through the night appears to come at a steep cost—a heightened risk of cancer. (p. 45)
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A prototype memory chip stores data bits using carbon nanotubes as mechanical switches. (p. 45)
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The most detailed look yet at the monarch butterfly's daily rhythm keeper suggests it's closer to ancient forms than to the fruit fly's or mouse's inner clock. (p. 45)
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Shallow sleep can depress the body's ability to process glucose efficiently. (p. 46)
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Making ethanol from switchgrass yielded more than 5 times more energy than needed to grow the crops in a large-scale farming trial. (p. 46)
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Scientists have discovered an unusual HIV protein in a Kenyan woman that makes the virus vulnerable to antibodies. (p. 46)
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Satellite images of Antarctica between 1992 and 2006 indicate that the continent was losing ice much faster at the end of that period than it was a decade before. (p. 46)
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(p. 47)
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