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A Regulatory Network Analysis Of Phenotypic Plasticity In Yeast Molecular biologists have found that the connectedness of genes and proteins is correlated with a range of phenomena, from how essential genes are, to the rates at which they have evolved, to the probability that they are lost over evolutionary time. In the yeast gene regulatory network, some genes are turned on and off by just one 'regulatory gene' while others are influenced by ten or more regulatory genes. Arctic Ocean Circulation Does An About-Face A team of NASA and university scientists has detected an ongoing reversal in Arctic Ocean circulation triggered by atmospheric circulation changes that vary on decade-long time scales. The results suggest not all the large changes seen in Arctic climate in recent years are a result of long-term trends associated with global warming. Awareness Of Racism Affects How Children Do Socially And Academically A study of more than 120 ethnically and socioeconomically diverse US elementary school children shows that children develop an awareness about racial stereotypes early and that those biases can be damaging. Specifically, the study illustrates that when children become aware of bias about their own racial or ethnic group, it can affect how they respond to everyday situations, ranging from interacting with others to taking tests. Amphetamine Use In Adolescence May Impair Adult Working Memory Rats exposed to high doses of amphetamines at an age that corresponds to the later years of human adolescence display significant memory deficits as adults -- long after the exposure ends, researchers report. Sky Map: Solar scientists use 'magnetic mirror effect' to reproduce IB Ever since NASA's Interstellar Boundary Explorer, or IBEX, mission scientists released the first comprehensive sky map of our solar system's edge in particles, solar physicists have been busy revising their models to account for the discovery of a narrow "ribbon" of bright emission that was completely unexpected and not predicted by any model at the time. Rapid Response Teams Save Children's Lives At Pediatric Hospital, Stud Deploying the hospital's "rapid response teams"proactively at the first inkling of trouble in hospitalized children can save lives, according to new research. The finding is the first to reveal lower death rates and cardiopulmonary arrest rates resulting from rapid response teams in a pediatric setting and could spark similar programs in children's hospitals around the country. New Tumor Suppressor Destroys Key Link In Cancer Chain A tumor-suppressing protein snatches up an important cancer-promoting enzyme and tags it with molecules that condemn it to destruction, a research team reports. Light May Arise From Relativity Violations Light as we know it may be a direct result of small violations of relativity, according to new research scheduled for publication online Tuesday (March 22) in the journal Physical Review D. Robert F. Kennedy Memorial: Life and Vision Biographical material about Robert Francis Kennedy, the U.S. senator who "was shot on June 5, 1968 at the Ambassador Hotel in Los Angeles, California shortly after claiming victory in that state's crucial Democratic primary."Includes photos, speeches, recommended reading, and other resources on Kennedy. From a memorial "led by the Kennedy family, a staff of expert human rights activists and ... volunteers." Figuring Out The Ups And Downs -- And Sideways -- Of Neural Developmen One of the key controllers of neural development seems to depend on a simple cellular decision -- whether to divide perpendicularly or in parallel to the embryonic structure called the neuroepithelium. Nevertheless, such orientation is critical, and understanding its machinery could help neuroscientists learn to control the division of adult neural stem cells to regenerate neural tissues.
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