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http://www.sciencenews.org/view/issue/id/42219
April 11th, 2009
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Deconstructing flowers yields the secrets of petals, scents and hue (p. 22)
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The launch of the European Space Agency’s Planck mission, set for late April or early May, will put into orbit a new tool —the microwave equivalent of polarized sunglasses — that may offer a view of the dawn of time. (p. 16)
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Cities sizzle as more people move in (p. 26)
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Prominent biologist calls ‘prokaryote’ outdated term. (p. 5)
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Rhesus macaque moms are more likely to give in to screaming babies when bystanders are watching and reacting (p. 8)
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Scientists survey the specific gravity of 25 marine critters. (p. 8)
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Hematite crystals in Australian rocks hint that Earth’s atmosphere was oxygenated earlier than previously thought. (p. 9)
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Satellite data could help scientists better predict killer heat waves, such as the one that hit Europe in 2003. (p. 9)
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Scientists finally pin down the proteins one plant uses to lure pollen tubes to its plant ovaries. (p. 10)
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Scientists have created a new material that repairs itself when exposed to ultraviolet light. (p. 10)
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A slow and incremental introduction of peanuts into the diet helps some children overcome an allergy to the food, but it takes time and close supervision. (p. 11)
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Levels of microRNAs in the blood and tissue distinguish rejected transplants from healthy tissue. (p. 11)
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An experimental vaccine against cytomegalovirus has the ability to prevent infection half the time it’s administered, suggesting the vaccine might prevent birth defects the virus can cause. (p. 11)
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New studies in rodents show that methods that are less invasive than deep brain stimulation may help people with Parkinson's disease regain movement. (p. 11)
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Unusually high concentration of perchlorate salts found in Martian soil suggests that the Red Planet may harbor shallow, extremely briny oceans just below its surface. The existence of these brines may explain a host of puzzles on Mars. (p. 12)
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Researchers for the first time directly observe Alfvén waves. (p. 12)
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Rubidium atoms simultaneously act like a solid and a superfluid. (p. 13)
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Africans who spurn all things Western provide evidence that people everywhere recognize expressions of happiness, sadness and fear in music. Listen to some of the audio samples the study used. (p. 14)
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Scientists have pushed back the age of Peking Man, raising questions about whether Homo erectus trekked to eastern Asia in two separate migrations. (p. 14)
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Review by Sid Perkins (p. 30)
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Review by Elizabeth Quill (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. 4)
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(p. 32)
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