- :: Atom & Cosmos
- :: Body & Brain
- :: Earth
- :: Environment
- :: Genes & Cells
- :: Humans
- :: Life
- :: Matter & Energy
- :: Molecules
- :: Science & Society
- :: Other Topics
- :: Science News For Kids
http://www.sciencenews.org/view/issue/id/40463
February 14th, 2009
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(p. 30)
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(p. 30)
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(p. 30)
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(p. 30)
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(p. 30)
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Dumb designs for sex: Evolutionary biology walks on the weird side (p. 16)
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Speed dating offers scientists a peek at how romance actually blossoms (p. 22)
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Finding signs of a lost beginning (p. 26)
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One study finds tissue-specific methylation signatures in the genome; another a similarity between identical twins in DNA’s chemical tagging. (p. 5)
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In past 50 years, apparently healthy forests have started losing trees faster, possibly because of climate change. (p. 8)
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Satellite data show most of the continent is following worldwide trend. (p. 8)
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A decline in fog and haze clears the air but also fuels 20 percent of the warming in Europe, a new study concludes. (p. 9)
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The definitive discovery in Mars’ atmosphere of methane — often, but not always, a compound hinting at life — introduces the possibility of underground organisms. (p. 10)
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Intel Science Talent Search finalists announced. (p. 11)
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New field experiments indicate that wild capuchin monkeys choose the most effective stones for cracking nuts, suggesting deep evolutionary roots for the use of stone tools. (p. 12)
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Thermal imaging and algorithms challenge famous estimate of extreme bat number. (p. 12)
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A new brain-imaging study indicates that unusual neural activity linked to emotion, attention and conflict-resolution systems underlies a common psychiatric condition known as borderline personality disorder. (p. 13)
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Study turns belief commonly held by video game industry, gamers, on its head. (p. 14)
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Electrical measurements of sleeping newborn babies’ brains indicate that the 2- to 3-day-olds automatically detect a regular beat in rhythmic sequences, possibly reflecting an early capacity for learning music. (p. 14)
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Review by Elizabeth Quill (p. 30)
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Review by Sid Perkins (p. 30)
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(p. 32)
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Reader letters : February 14, 2009
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