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http://www.sciencenews.org/view/issue/id/279
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In This Issue
- Sequencing the dead to save the living: Reviving ancient genomes of long-extinct creatures offers a window into past extinctions—and may help prevent future die outs
- No gene is an island: Even as biologists catalog the discrete parts of life forms, an emerging picture reveals that life’s functions arise from interconnectedness
- The decider: Informing the debate over the reality of ‘free will’ requires learning something about the lateral habenula
- This week's table of contents
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March 18th, 2000
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The ability to hear and see rapidly changing stimuli may underlie reading skills, raising the possibility of new approaches to reading instruction. (p. 180)
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Injections of olfactory ensheathing glial cells from the brain help severed spinal cords heal in rats. (p. 180)
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A project on encrypting words within a strand of DNA won the top prize at the Intel Science Talent Search. (p. 181)
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A new fuel cell that runs on hydrocarbons such as natural gas, butane, and diesel instead of hydrogen could be an efficient, practical way to generate power without pollution. (p. 181)
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Experiments with a liquid crystal may confirm the 50-year-old prediction that a nearly unlimited number of facets of different orientations can simultaneously decorate a crystal surface. (p. 182)
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A fungus that attacks only the male flowers on the chempedak fruit tree seems to be the edible reward for pollinators—the first fungus discovered to play such a role in pollination. (p. 182)
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By detecting sound waves that have traveled through the sun, two physicists have for the first time found a way to view disturbances on the sun's hidden half, providing a glimpse of stormy weather patterns a week to 10 days before they come into view. (p. 183)
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Changing land-use practices—especially in forests, croplands, and fallow areas—appear to play a far bigger role than anticipated in determining how much carbon gets removed from the air by vegetation. (p. 183)
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A material etched with tiny, carefully shaped pores can act like an artificial enzyme, cell membrane, or receptor. (p. 186)
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Preliminary studies indicate that moderate consumption of chocolate products may offer cardiovascular benefits. (p. 188)
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A mushroom epidemic in Brazilian cacao trees, which has cut the production of cacao by 25 percent in 5 years, may be treatable with another fungus. (p. 184)
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Scientists are concerned about new forms of antibiotic resistance cropping up in fire blight—a deadly disease of apple trees. (p. 184)
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Learning the taste of nutritious food pays off in a boost to fitness, even for a grasshopper. (p. 184)
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A pheromone that helps drive locusts into a swarm comes from bacteria in their gut. (p. 184)
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An ant will ignore a single golden egg bug and attack a mating pair, a choice that may explain why singles hang around pairs. (p. 184)
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Genetically engineered bacteria may stop tooth decay by replacing the ones in the mouth that destroy tooth enamel. (p. 190)
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The search is on for an undersea eruption near the Japanese volcanic island chain. (p. 191)
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Scientists have recently discovered a 10,000-year-old forest buried in the sand in Michigan. (p. 191)
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A single photon confined to a tiny, mirror-lined cavity becomes electrically strong enough to swing an atom in loops. (p. 191)
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Preferring neon to nicotine, magnetic-fusion reactors called tokamaks get a performance boost from puffs of the noble gas. (p. 191)
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