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http://www.sciencenews.org/view/issue/id/39870
January 31st, 2009
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This special Web edition of Science News includes expanded versions of articles from the magazine’s print edition plus two additional features, all commemorating the 200th anniversary of the birth of Charles Darwin. (p. 17)
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Darwin's life and his contribution to science
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Darwin’s dangerous idea has adapted to modern biology (p. 21)
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Mining the Gaps: Transitional fossils are the hardest to fi nd, but sometimes tell the best stories (p. 30)
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Investigating the genetic books of life reveals new details of 'descent with modification' and the forces driving it. (p. 26)
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A genetic investigation of two rare types of mitochondrial DNA in Native Americans suggests that people first entered the Americas in two groups, following separate routes. (p. 5)
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Heftier size puts our galaxy on par with its neighbor Andromeda, implying a closer collision date. Findings also suggest Milky Way has four spiral arms. (p. 8)
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New high-resolution mosaic sharpens understanding of Milky Way’s turbulent center. (p. 8)
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Unexplained radio noise may be signals from the early universe.
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Male and female mosquitoes harmonize pitch when in the mood. (p. 10)
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Newly recorded moth could be the first demonstrated case of natural sonar-jamming. (p. 10)
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Diamond-mining pits have yielded stone artifacts old enough to suggest that hand axe production started 1.6 million years ago in southern Africa, not just in eastern Africa. (p. 11)
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Babies delivered by elective cesarean section just a week or two before 39 weeks of gestation face increased risk of respiratory and other complications. (p. 12)
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Study of Mt. Everest climbers shows some bodies can tolerate low oxygen levels that are toxic to others. (p. 13)
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A surgery in which two tiny electrodes are placed in the brain improves the quality of life of patients with Parkinson’s disease, including older patients, and seems to have only short-term side effects. (p. 13)
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Brain-scanning study in people sees link between personality, dopamine system. (p. 13)
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A previously overlooked protein called SIRT6 provides some molecular clues to aging. (p. 13)
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A mathematician fine-tunes how to blend crime records, geography to track down serial criminals. (p. 14)
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New equations help solve decades-old puzzle of why one species doesn’t always outcompete another. (p. 14)
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Two meteorites retrieved from West Antarctica, fragments of an ancient asteroid, contain a type of rock commonly found in Earth’s crust but previously unseen in meteorites. (p. 15)
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Review by Elizabeth Quill
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Review by Tom Siegfried
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(p. 34)
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(p. 34)
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(p. 34)
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(p. 34)
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(p. 36)
Advertisement
Book Review: Charles Darwin’s On the Origin of Species: A Graphic Adaptation
Review by Sid Perkins
Buy now | More Books
Review by Sid Perkins
Buy now | More Books
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