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http://www.sciencenews.org/view/issue/id/3819
May 3rd, 2003
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In separate presentations at scientific meetings, two anthropologists challenged the influential view that the human evolutionary family has contained as many as 20 different fossil species. (p. 275)
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Researchers have made extraordinarily long carbon nanotubes and aligned them to create tiny transistors and sensors for detecting chemical and biological agents. (p. 275)
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A sprawling network of seismometers that covers the Los Angeles area could be adapted to provide warning of damaging ground motions from earthquakes in the seconds before those seismic vibes arrive. (p. 276)
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Prized, light-manipulating microstructures known as photonic crystals may transform light in new and technologically tantalizing ways when jolted by shock waves. (p. 276)
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A molecular pore that controls the flow of ions into cells has an unexpected shape and mechanism. (p. 277)
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Measuring the composition of some of the earliest structures in the universe, two teams of astronomers have unveiled new findings about star formation in the young cosmos. (p. 278)
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One form of an immune-system gene shows up more frequently in people with diabetes or certain thyroid diseases than in people free of those illnesses. (p. 278)
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By means of novel sensors and mathematical models, scientists are teaching the basics of human social interactions to computers, which should ease the ever-expanding collaboration between people and machines. (p. 279)
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Next year will mark the 100th anniversary of the discovery of chestnut blight in the United States, but enthusiasts still haven't given up hope of restoring American chestnut forests. (p. 282)
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Inhibiting the natural protein cyclo-oxygenase-2, or COX-2, might help fight Parkinson's disease. (p. 285)
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New analyses of seismic waves that have traveled deep within Earth may answer a decades-old question about the thickness of the planet's continents. (p. 285)
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NASA last month selected the landing sites for rovers scheduled to begin exploring the Martian surface next January. (p. 285)
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A prototype detector based on a tiny silicon cantilever that operates in air has achieved a 1,000-fold sensitivity boost when measuring tiny quantities of chemical agents. (p. 285)
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New findings by ocean scientists may help port officials in Rotterdam, the Netherlands, predict potentially destructive waves in the city's harbor. (p. 285)
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Touted in textbooks as the heaviest stable, naturally occurring isotope, bismuth-209 actually does decay but with an astonishingly long half-life of 19 billion billion years. (p. 286)
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Scientists have identified a reason why cloning a person may be difficult, if not impossible. (p. 286)
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Evading predators may be the big factor driving certain caterpillars to shoot their waste pellets great distances. (p. 286)
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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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