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http://www.sciencenews.org/view/issue/id/8408
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In the December 5 Issue:
- TABLE OF CONTENTS
- Climate might be right for a deal: Copenhagen negotiations will take steps toward a climate-stabilizing treaty
- Botanical Whales: Adventures in the Tortugas reveal that seagrass fields need saving too
- Breaking the Speed Limit: Studies examine physiology and technology to better foresee the ultimate edge of human performance
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April 14th, 2007
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A group of 35 labs has unveiled a draft of the genome of the rhesus macaque, the most widely used laboratory primate and a cousin to people. (p. 227)
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A new influenza vaccine churned out by caterpillar cells infected with a genetically engineered virus effectively prevents the flu. (p. 227)
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New analyses of a Tyrannosaurus rex leg bone reveal substantial remnants of proteins that strengthen the link between modern birds and dinosaurs. (p. 228)
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Certain adult stem cells from female mice regenerate better than those from males, indicating that not all stem cells are created equal. (p. 228)
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The wavelike behavior of energy in chlorophyll might explain how plants are so efficient at using solar energy. (p. 229)
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Four proteins work together to assist cancer growth and metastasis, and drugs against them inhibit both processes, tests in mice suggest. (p. 229)
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A controversial analysis of a recently discovered jaw from a 3-million-year-old Australopithecus afarensis puts Lucy's species on an evolutionary side branch that eventually died out. (p. 230)
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Considering silk from the spider's perspective may offer the best chance of replicating these creatures' tough threads. (p. 231)
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Methods now under development could make DNA sequencing quicker and less expensive, paving the way for the day when treatments can be tailored to each person's genetic profile. (p. 235)
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Images taken by a Mars-orbiting spacecraft show what appear to be caves on the Red Planet. (p. 237)
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A reconstituted version of good cholesterol may lessen the amount of plaque that accumulates in arteries and render existing plaque less dangerous. (p. 237)
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Rats use background knowledge about what they have already learned to remember relevant new material surprisingly quickly. (p. 237)
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Portable electricity generators are frequently the culprit in domestic carbon monoxide poisonings—even when the devices sit outside the home. (p. 237)
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A new controlled-release technology relies on enzymes to unshackle a chemical only when and where it's needed. (p. 238)
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To improve the detection of harmful arterial plaques, researchers have modeled a nanoparticle on a natural material: good cholesterol. (p. 238)
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Engineers have developed sunglasses that can change from dark, filtering hues to clear—and back—at the flip of a switch. (p. 238)
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A new gene therapy technique releases genetic material from successive nanoscale layers of DNA as sheets of polyester that hold them in place slowly degrade. (p. 238)
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(p. 239)
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