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http://www.sciencenews.org/view/issue/id/4605
January 10th, 2004
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Pummeled by debris, a NASA spacecraft last week snatched up dust samples while taking the sharpest images ever of a comet's icy core. (p. 19)
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The threat of mad cow disease to both people and animals in the U.S. remains low, as long as government regulations designed to prevent the disease's spread are enforced, risk analysts say. (p. 19)
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Squid can manipulate light in amazing ways to camouflage themselves at night, and researchers have unveiled a bizarre set of reflective proteins in the animals' tissues that underlie this trait. (p. 20)
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Specific brain structures work together to allow people to repress certain memories intentionally. (p. 21)
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Researchers have discovered that the transistor can emit light, a yet-untapped talent. (p. 21)
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Scientists have associated aspirin use with cancer of the pancreas. (p. 21)
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NASA's Spirit rover sent its first signals home soon after it touched down on Mars Jan. 3, but European Space Agency scientists haven't yet heard from their Beagle 2 lander, which dropped to the surface of Mars on Dec. 24. (p. 22)
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Analyses of newsprint materials suggest that, despite their frail appearance, newspapers can last more than 200 years in storage—a fact that calls into question the merits of microfilming. (p. 24)
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Scientists are eavesdropping on volcanoes, avalanches, earthquakes, and meteorites to discern these phenomena's infrasound signatures and see what new information infrasound might reveal. (p. 26)
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A gene involved in brain chemistry influences whether a person is thin or fat. (p. 28)
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An experimental vaccine against the SARS virus shows promise in a test on monkeys. (p. 28)
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A new study provides graphic evidence that X-ray observations may be the best way to identify ancient collisions between galaxies. (p. 29)
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Testosterone excreted by livestock can pass through soils, which may explain new findings of fish-altering hormonal activity in water downstream of cattle feedlots. (p. 29)
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By excising certain immune cells from donor bone marrow, physicians have devised a new way of performing marrow transplants. (p. 30)
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An experimental drug helps a small but significant fraction of people with acute myeloid leukemia and causes minimal side effects. (p. 30)
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A novel drug appears to help people with myelodysplasia, a persistent condition that leaves them short of crucial blood components. (p. 30)
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People who develop low concentrations of iron-containing hemoglobin in their blood as they get older are at elevated risk for serious medical problems and early death. (p. 30)
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Letters from the Jan. 10, 2004, issue of Science News. (p. 31)
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Book Review: Charles Darwin’s On the Origin of Species: A Graphic Adaptation
Review by Sid Perkins
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Review by Sid Perkins
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