ScienceDaily Top Science Headlines
for Saturday, October 30, 2010
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Newly discovered gene enables fish to 'disappear' (October 29, 2010) -- Researchers have discovered a new member of a gene family that has powerful influences on pigmentation and the regulation of body weight. The new gene, an agouti family gene called agrp2, has been found exclusively in bony fish, including zebrafish, trout and salmon. The protein it encodes enables fish to change color dramatically to match their surroundings, the researchers report. ... > full story
Bed rest can harm, instead of help, in pregnancy complications, research suggests (October 29, 2010) -- Bed rest may not be the best option for preventing preterm labor and may even cause harm to the mother and baby, according to an integrative literature review. ... > full story
Three-dimensional maps of brain wiring (October 29, 2010) -- Scientists have developed a software tool that physicians can use to easily study the wiring of the brains of their patients. The tool converts MRI scans using special techniques to three-dimensional images. This now makes it possible to view a total picture of the winding roads and their contacts without having to operate. ... > full story
Researchers use math, maps to plot malaria elimination plan (October 29, 2010) -- An international team of researchers has used mathematical models and maps to estimate the feasibility of eliminating malaria from countries that have the deadliest form of the disease. ... > full story
Troubled islands: Hurricanes, oil spill and sea level rise (October 29, 2010) -- The islands flanking the outlet of the Mississippi River are not only facing losses due to sea level rise and local subsidence, according to one study, but new unknown impacts from oil recovery operations, say researchers working on another project. Some islands could disappear entirely in coming decades, exposing huge swaths of marshland to the waves of the open sea. ... > full story
Most preschool-age children exceed daily screen time recommendations, new study suggests (October 29, 2010) -- The American Academy of Pediatrics recommends that parents limit combined screen time from television, DVDs, computers and video games to two hours per day for preschool-age children. In a study soon to be published, researchers found that many children are exposed to screen time both at home and while at child care, with 66 percent exceeding the recommended daily amount. ... > full story
Is the shape of a genome as important as its content? (October 29, 2010) -- The complex associations between genes may be defined in part by the three-dimensional structure of the all of the chromosomes form together: the shape of the genome, according to researchers. By mapping out the structure of the fission yeast genome, they demonstrate how this non-random arrangement positions groups of genes together. This structure is not merely the shape of the genome, but also a key to how it works. ... > full story
Researchers build colony of colon cancer stem cells to test new approach to therapy (October 29, 2010) -- Researchers have devised a three-dimensional system in laboratory culture that mimics the growth patterns of colon cancer stem cells in patients. The assay, which uses green fluorescent "reporter" proteins to watch the process of stem cell differentiation, is designed to understand how these cancer stem cells behave, and to identify and test therapies that could halt production of the endless generations of new cancer stem cells that continually revive a tumor. ... > full story
Space radar provides a taste of Comet Hartley 2 (October 29, 2010) -- Exactly one week before the world gets a new look at comet Hartley 2 via NASA's EPOXI mission, observations of the comet by the Arecibo Planetary Radar in Puerto Rico have offered scientists a tantalizing preview. ... > full story
Cancer: Key mechanism in the control of cell motility revealed (October 29, 2010) -- Scientists have identified a novel molecular mechanism in the control of cell motility. This research could eventually lead to the development of new cancer-treating drugs that could block the spread of tumors (metastasis). ... > full story
‘Wireless’ humans could form backbone of new mobile networks (October 29, 2010) -- Members of the public could form the backbone of powerful new mobile internet networks by carrying wearable sensors. The novel sensors could create new ultra high bandwidth mobile internet infrastructures and reduce the density of mobile phone base stations, according to researchers. ... > full story
Not putting the clocks back this weekend would improve health, says expert (October 29, 2010) -- Not putting the clocks back this weekend but still putting them forward in the spring would be a simple and effective way to vastly improve our health and well-being, says an expert in the online British Medical Journal. ... > full story
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