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http://www.sciencenews.org/view/issue/id/45220
July 18th, 2009
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New studies detail how the invisible particles that pollute the air can damage heart, lungs and genetic programming. (p. 26)
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COVER STORY: Scientists probe debris trapped by white dwarfs to learn more about what faraway Earthlike planets are made of. (p. 22)
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A neural network active when the brain is at rest may prove critical to zoning out, a sense of self and envisioning the future. (p. 16)
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Recent research finds that the hormone mimic may be more prevalent and more harmful than previously thought, highlighting why BPA is a growing worry for policy makers. (p. 5)
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Researchers announce an intriguing new finding about the most energetic charged particles in the universe. (p. 8)
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The Red Planet’s dust devils charge up particles, providing first direct evidence of this type of electrical discharge on Mars. (p. 8)
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A recently discovered stellar explosion may be part of a new class of supernova. (p. 9)
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Researchers unveil state-of-the-art simulation of galaxy formation. (p. 9)
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A reanalysis of data challenges a prominent report that a particular gene variant interacts with stressful experiences to promote depression, sparking controversy. (p. 10)
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Appendicitis might be diagnosable with a new urine test, an advance that could prevent many unnecessary surgeries. (p. 11)
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In the wild, a culinary kick comes with risks to the plant. (p. 12)
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Fossilized fingers strengthen evolutionary link between dinosaurs and avian relatives. (p. 12)
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Granaries excavated in Jordan indicate that people stored large quantities of wild cereals by about 11,300 years ago, a practice that led to the cultivation of domesticated plants, a new study suggests. (p. 13)
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Excavations in Germany have unearthed what may be the oldest known musical instruments. (p. 13)
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Scientists suggest a way to put ultracold atoms to work. (p. 14)
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Researchers have made one of the most basic components of a machine out of a snowflake-shaped molecule. (p. 14)
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A new model predicts that rises in sea level, combined with subsiding lands, will claim a tenth of the state by century’s end. (p. 15)
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Review by Sid Perkins (p. 30)
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Review by Bruce Bower (p. 30)
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