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http://www.sciencenews.org/view/issue/id/9177
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In This Issue
- Ultramassive: as big as it gets: A black hole can consume anything in its path. These monsters can become huge — but perhaps only so huge.
- Body In Mind: Long thought the province of the abstract, cognition may actually evolve as physical experiences and actions ignite mental life
- This week's table of contents
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December 8th, 2007
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Using a new technique to turn skin cells into stem cells, scientists have corrected sickle cell anemia in mice. (p. 355)
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A young chimp outperforms college students on a test of recalling numbers glimpsed for less than a quarter of a second. With video. (p. 355)
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An innovative field survey of the world's largest salt flat, a New Jersey–size playa high in the Andes, reveals that the barren expanse actually has minuscule, centimeter-scale variations in topography. (p. 356)
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Physicists have performed the first calculation involving manipulation of the quantum states of photons, another step on the road to optical quantum computers. (p. 356)
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Tumors enlist certain bone marrow cells in efforts to grow new blood vessels for self-nourishment. (p. 357)
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A molecular pump meant to transport iodine also concentrates perchlorate, an environmental pollutant, in breast milk. (p. 358)
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A new infrared portrait of an embryonic sunlike star reveals an early, crucial step in the process of planet formation. (p. 358)
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Physicists are exploring the use of muons generated by cosmic rays to explore Mayan archaeological sites and to probe the interiors of volcanoes and shipping containers. (p. 360)
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A new industry program to self-regulate most salad producers is forcing affected farmers to choose between adopting measures unfriendly to wildlife and a loss of major markets for their greens. (p. 362)
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Scientists have observed Plasmodium falciparum enjoying three distinct lifestyles—two of which have never been seen before—in the blood of infected children. (p. 365)
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Divorce often takes a devastating toll on families, but it has significant impacts on the environment as well. (p. 365)
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Exendin-4 (exenatide) might complement a drug called anti-CD3 monoclonal antibody in reversing type 1 diabetes, a study in mice shows. (p. 365)
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Keeping benign breast tumors from progressing into a malignant cancer can be achieved in mice by reducing a signaling protein. (p. 365)
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Incorporating emerging data on how kids learn and cement ideas could help schools teach science more effectively, a new report argues. (p. 366)
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Magnetic nanoparticles selectively bind to specific bacteria and can drag them out of a liquid. (p. 366)
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A new technique beats the resolution limits of ordinary microscopes in a way that seems to defy conventional optical theory. (p. 366)
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Two research teams have used the biggest array of flowering-plant genes yet to try to reconstruct the elusive evolutionary history of today's flowers. (p. 366)
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(p. 367)
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Science & the Public
Oct 12th 2008
Comment
Oct 10th 2008
Math Trek
The U.S. News & World Report rankings of colleges and universities are largely arbitrary, according to a new mathematical analysis. Oct 3rd 2008
The U.S. News & World Report rankings of colleges and universities are largely arbitrary, according to a new mathematical analysis. Oct 3rd 2008
Natural History of the Point Reyes Peninsula
Univ. of California, 2008, 366 p., $24.95
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Univ. of California, 2008, 366 p., $24.95
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